diff --git a/.env.example b/.env.example
index f6b550f..4e81288 100644
--- a/.env.example
+++ b/.env.example
@@ -1,4 +1,4 @@
-# Saleor domain when you want to install the app. It will be used to verify JWT tokens.
+# Saleor domain where do you want to install the app. It will be used to verify JWT tokens.
 SALEOR_URL=https://your.eu.saleor.cloud
 # Where your email assets are stored
 STATIC_URL=https://your.cdn/
@@ -8,7 +8,7 @@ STOREFRONT_URL=https://your.storefront.com
 # Email from which email will be sent
 FROM_EMAIL=hello@mirumee.com
 # Name from which email will be sent
-FROM_NAME=
+FROM_NAME=Mirumee
 
 # AWS SQS queue url
 SQS_QUEUE_URL=http://host.docker.internal:4566/000000000000/nimara-mailer-queue
@@ -21,8 +21,8 @@ AWS_REGION=ap-southeast-1
 AWS_ACCESS_KEY_ID=
 AWS_SECRET_ACCESS_KEY=
 
-# One of: NODE_MAILER, AWS_SES
-EMAIL_PROVIDER=AWS_SES
+# One of: AWS_SES, NODE_MAILER
+EMAIL_PROVIDER=NODE_MAILER
 
 # Localstack only. When using AWS please comment this out
 FROM_DOMAIN=mirumee.com
diff --git a/.env.test b/.env.test
index bbdc6f3..383b292 100644
--- a/.env.test
+++ b/.env.test
@@ -9,3 +9,4 @@ AWS_SESSION_TOKEN=mock
 SECRET_MANAGER_APP_CONFIG_PATH=mock
 SQS_QUEUE_URL=https://sqs.queue.url
 STATIC_URL=https://static.url
+AUTHORIZATION_TOKEN=
diff --git a/.gitignore b/.gitignore
index 5460b6a..959318c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,8 +11,7 @@ coverage
 # out files
 .next/
 out/
-build/*
-package*
+build/
 dist/
 vite.config.js.timestamp*
 *.zip
diff --git a/package.json b/package.json
index 6772ea5..6c5efc7 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "scripts": {
     "dev": "concurrently -k -p \"[{name}]\" -n \"TSC,BUILD,RECEIVER,SENDER\" -c \"blue.bold,red.bold,cyan.bold,green.bold\" \"pnpm tsc:watch\" \"pnpm dev:build\" \"pnpm dev:run:events-receiver\" \"pnpm dev:run:emails-sender-proxy\"",
     "dev:build": "dotenv -v NODE_ENV=development -- node ./etc/scripts/dev.mjs",
-    "dev:emails": "dotenv -- email dev -d ./src/emails -p 3002",
+    "dev:emails": "dotenv -- email dev -d ./src/emails/templates -p 3002",
     "dev:run:events-receiver": "dotenv -v NODE_ENV=development -- nodemon --inspect=0.0.0.0:9229 --watch build/events-receiver.js build/events-receiver.js",
     "dev:run:emails-sender-proxy": "dotenv -v NODE_ENV=development -- nodemon --inspect=0.0.0.0:9230 --watch build/emails-sender-proxy.js build/emails-sender-proxy.js",
     "build": "dotenv -v NODE_ENV=production node ./etc/scripts/build.mjs",
diff --git a/src/api/rest/routes.test.ts b/src/api/rest/routes.test.ts
index d9dab2c..f201e47 100644
--- a/src/api/rest/routes.test.ts
+++ b/src/api/rest/routes.test.ts
@@ -1,11 +1,11 @@
 import { beforeEach, describe, expect, it, vi } from "vitest";
 
+import { CONFIG } from "@/config";
+import { EMAIL_EVENTS } from "@/const";
 import * as validate from "@/lib/graphql/validate";
 import * as auth from "@/lib/saleor/auth";
 import { createServer } from "@/server";
 
-import { EVENT_HANDLERS } from "./saleor/webhooks";
-
 describe("apiRoutes", () => {
   describe("/api/healthcheck", () => {
     it("200", async () => {
@@ -56,6 +56,36 @@ describe("apiRoutes", () => {
       expect(response.statusCode).toStrictEqual(expectedStatusCode);
     });
 
+    it("Should return 401 with invalid config authorization token.", async () => {
+      // given
+      const expectedStatusCode = 401;
+      const expectedJson = {
+        error: "UNAUTHORIZED",
+        code: "UNAUTHORIZED_ERROR",
+        requestId: expect.any(String),
+        errors: [{ message: "Invalid authorization token." }],
+      };
+      const event = EMAIL_EVENTS[0];
+
+      vi.spyOn(CONFIG, "AUTHORIZATION_TOKEN", "get").mockReturnValue(
+        "mocked-token"
+      );
+
+      // when
+      const response = await app.inject({
+        method: "POST",
+        url,
+        headers: {
+          Authorization: "Bearer wrong",
+        },
+        body: { data: {}, event },
+      });
+
+      // then
+      expect(response.json()).toStrictEqual(expectedJson);
+      expect(response.statusCode).toStrictEqual(expectedStatusCode);
+    });
+
     it("Should return 400 passed when event is not supported.", async () => {
       // given
       const expectedStatusCode = 400;
@@ -92,9 +122,9 @@ describe("apiRoutes", () => {
       const validateSpy = vi.spyOn(validate, "validateDocumentAgainstData");
       const expectedJson = { status: "ok" };
       const expectedStatusCode = 200;
+      const event = EMAIL_EVENTS[0];
 
       // when
-      const event = EVENT_HANDLERS[0].event.toLowerCase();
       jwtVerifySpy.mockImplementation(async () => undefined);
       validateSpy.mockImplementation(() => ({ isValid: true, error: null }));
 
diff --git a/src/api/rest/routes.ts b/src/api/rest/routes.ts
index a185061..b334cc6 100644
--- a/src/api/rest/routes.ts
+++ b/src/api/rest/routes.ts
@@ -4,6 +4,12 @@ import { type ZodTypeProvider } from "fastify-type-provider-zod";
 import { z } from "zod";
 
 import { CONFIG } from "@/config";
+import {
+  CUSTOM_EVENTS_SCHEMA,
+  type CustomEventType,
+  EMAIL_EVENTS,
+} from "@/const";
+import { UnauthorizedError } from "@/lib/errors/api";
 import { validateDocumentAgainstData } from "@/lib/graphql/validate";
 import { serializePayload } from "@/lib/payload";
 import { verifyJWTSignature } from "@/lib/saleor/auth";
@@ -11,7 +17,7 @@ import { saleorBearerHeader } from "@/lib/saleor/schema";
 import { getJWKSProvider } from "@/providers/jwks";
 
 import { saleorRoutes } from "./saleor";
-import { EVENT_HANDLERS } from "./saleor/webhooks";
+import { SALEOR_EVENTS_MAP } from "./saleor/webhooks";
 
 export const restRoutes: FastifyPluginAsync = async (fastify) => {
   await fastify.register(saleorRoutes, { prefix: "/saleor" });
@@ -26,40 +32,55 @@ export const restRoutes: FastifyPluginAsync = async (fastify) => {
         headers: saleorBearerHeader,
         body: z.object({
           data: z.any(),
-          event: z.enum(
-            EVENT_HANDLERS.map(({ event }) => event.toLowerCase()) as any
-          ),
+          event: z.enum(EMAIL_EVENTS),
         }),
       },
     },
 
     async (request, response) => {
-      await verifyJWTSignature({
-        jwksProvider: getJWKSProvider(),
-        jwt: request.headers.authorization,
-      });
+      if (CONFIG.AUTHORIZATION_TOKEN) {
+        if (CONFIG.AUTHORIZATION_TOKEN !== request.headers.authorization) {
+          throw new UnauthorizedError({
+            message: "Invalid authorization token.",
+          });
+        }
+      } else {
+        await verifyJWTSignature({
+          jwksProvider: getJWKSProvider(),
+          jwt: request.headers.authorization,
+        });
+      }
 
-      const document = EVENT_HANDLERS.find(
+      const saleorEvent = SALEOR_EVENTS_MAP.find(
         ({ event }) => event.toLowerCase() === request.body.event
-      )!.query;
+      );
+      let data: unknown;
 
-      const { isValid, error } = validateDocumentAgainstData({
-        data: request.body.data,
-        document,
-      });
+      if (saleorEvent) {
+        const { isValid, error } = validateDocumentAgainstData({
+          data: request.body.data,
+          document: saleorEvent.query,
+        });
+        data = request.body.data;
+
+        if (!isValid) {
+          throw new z.ZodError([
+            {
+              path: ["body > data"],
+              message: error ?? "",
+              code: "custom",
+            },
+          ]);
+        }
+      } else {
+        const schema =
+          CUSTOM_EVENTS_SCHEMA[request.body.event as CustomEventType];
 
-      if (!isValid) {
-        throw new z.ZodError([
-          {
-            path: ["body > data"],
-            message: error ?? "",
-            code: "custom",
-          },
-        ]);
+        data = schema.parse(request.body.data, { path: ["body > data"] });
       }
 
       const payload = serializePayload({
-        data: request.body.data,
+        data,
         event: request.body.event,
       });
 
diff --git a/src/api/rest/saleor/index.ts b/src/api/rest/saleor/index.ts
index dd5ba8e..a59e77a 100644
--- a/src/api/rest/saleor/index.ts
+++ b/src/api/rest/saleor/index.ts
@@ -2,20 +2,24 @@ import { type FastifyRequest } from "fastify";
 import type { FastifyPluginAsync } from "fastify/types/plugin";
 
 import { CONFIG } from "@/config";
-import { type AppManifestWebhook } from "@/graphql/schema";
+import {
+  type AppManifestWebhook,
+  type WebhookEventTypeAsyncEnum,
+} from "@/graphql/schema";
 import { saleorAppRouter } from "@/lib/saleor/apps/router";
 import { getConfigProvider } from "@/providers/config";
 import { getJWKSProvider } from "@/providers/jwks";
 import { getSaleorClient } from "@/providers/saleorClient";
 
 import { saleorRestRoutes } from "./saleor";
-import { EVENT_HANDLERS, saleorWebhooksRoutes } from "./webhooks";
+import { SALEOR_EVENTS_MAP, saleorWebhooksRoutes } from "./webhooks";
 
 const getManifestWebhooks = (request: FastifyRequest): AppManifestWebhook[] =>
-  EVENT_HANDLERS.map(({ event, query }) => {
-    const name = event.toLocaleLowerCase().replaceAll("_", "-");
+  SALEOR_EVENTS_MAP.map(({ event, query }) => {
+    const name = event.replaceAll("_", "-");
+
     return {
-      asyncEvents: [event],
+      asyncEvents: [event.toUpperCase() as WebhookEventTypeAsyncEnum],
       name,
       query,
       syncEvents: [],
diff --git a/src/api/rest/saleor/webhooks.test.ts b/src/api/rest/saleor/webhooks.test.ts
index 4b3acc4..b100ecf 100644
--- a/src/api/rest/saleor/webhooks.test.ts
+++ b/src/api/rest/saleor/webhooks.test.ts
@@ -6,7 +6,7 @@ import { serializePayload } from "@/lib/payload";
 import * as auth from "@/lib/saleor/auth";
 import { createServer } from "@/server";
 
-import { EVENT_HANDLERS } from "./webhooks";
+import { SALEOR_EVENTS_MAP } from "./webhooks";
 
 describe("saleorWebhooksRoutes", () => {
   const sendSpy = vi.fn();
@@ -21,7 +21,7 @@ describe("saleorWebhooksRoutes", () => {
   });
 
   describe("/api/saleor/webhooks/email/*", () => {
-    it.each(EVENT_HANDLERS)(
+    it.each(SALEOR_EVENTS_MAP)(
       "should register route for $event event",
       ({ event }) => {
         // Given
diff --git a/src/api/rest/saleor/webhooks.ts b/src/api/rest/saleor/webhooks.ts
index be14e09..53a4405 100644
--- a/src/api/rest/saleor/webhooks.ts
+++ b/src/api/rest/saleor/webhooks.ts
@@ -4,6 +4,7 @@ import rawBody from "fastify-raw-body";
 import type { ZodTypeProvider } from "fastify-type-provider-zod";
 
 import { CONFIG } from "@/config";
+import { type SaleorEventType } from "@/const";
 import {
   AccountChangeEmailRequestedSubscriptionDocument,
   AccountConfirmationRequestedSubscriptionDocument,
@@ -19,66 +20,65 @@ import {
   OrderCreatedSubscriptionDocument,
   OrderRefundedSubscriptionDocument,
 } from "@/graphql/operations/subscriptions/generated";
-import { type WebhookEventTypeAsyncEnum } from "@/graphql/schema";
 import { serializePayload } from "@/lib/payload";
 import { verifyWebhookSignature } from "@/lib/saleor/auth";
 import { saleorWebhookHeaders } from "@/lib/saleor/schema";
 import { getJWKSProvider } from "@/providers/jwks";
 
-export const EVENT_HANDLERS: {
-  event: WebhookEventTypeAsyncEnum;
+export const SALEOR_EVENTS_MAP: {
+  event: SaleorEventType;
   query: string;
 }[] = [
   {
-    event: "ACCOUNT_CONFIRMATION_REQUESTED",
+    event: "account_confirmation_requested",
     query: AccountConfirmationRequestedSubscriptionDocument.toString(),
   },
   {
-    event: "ACCOUNT_CONFIRMED",
+    event: "account_confirmed",
     query: AccountConfirmedSubscriptionDocument.toString(),
   },
   {
-    event: "ACCOUNT_SET_PASSWORD_REQUESTED",
+    event: "account_set_password_requested",
     query: AccountSetPasswordRequestedSubscriptionDocument.toString(),
   },
   {
-    event: "ACCOUNT_DELETE_REQUESTED",
+    event: "account_delete_requested",
     query: AccountDeleteRequestedSubscriptionDocument.toString(),
   },
   {
-    event: "ACCOUNT_DELETED",
+    event: "account_deleted",
     query: AccountDeletedSubscriptionDocument.toString(),
   },
   {
-    event: "ACCOUNT_CHANGE_EMAIL_REQUESTED",
+    event: "account_change_email_requested",
     query: AccountChangeEmailRequestedSubscriptionDocument.toString(),
   },
   {
-    event: "ACCOUNT_EMAIL_CHANGED",
+    event: "account_email_changed",
     query: AccountEmailChangedSubscriptionDocument.toString(),
   },
   {
-    event: "ORDER_CREATED",
+    event: "order_created",
     query: OrderCreatedSubscriptionDocument.toString(),
   },
   {
-    event: "ORDER_CANCELLED",
+    event: "order_cancelled",
     query: OrderCancelledSubscriptionDocument.toString(),
   },
   {
-    event: "ORDER_REFUNDED",
+    event: "order_refunded",
     query: OrderRefundedSubscriptionDocument.toString(),
   },
   {
-    event: "FULFILLMENT_TRACKING_NUMBER_UPDATED",
+    event: "fulfillment_tracking_number_updated",
     query: FulfillmentTrackingNumberUpdatedSubscriptionDocument.toString(),
   },
   {
-    event: "FULFILLMENT_CREATED",
+    event: "fulfillment_created",
     query: FulfillmentCreatedSubscriptionDocument.toString(),
   },
   {
-    event: "GIFT_CARD_SENT",
+    event: "gift_card_sent",
     query: GiftCardSentSubscriptionDocument.toString(),
   },
 ];
@@ -86,8 +86,8 @@ export const EVENT_HANDLERS: {
 export const saleorWebhooksRoutes: FastifyPluginAsync = async (fastify) => {
   await fastify.register(rawBody);
 
-  EVENT_HANDLERS.forEach(({ event }) => {
-    const name = event.toLowerCase().replaceAll("_", "-");
+  SALEOR_EVENTS_MAP.forEach(({ event }) => {
+    const name = event.replaceAll("_", "-");
 
     fastify.withTypeProvider<ZodTypeProvider>().post(
       `/email/${name}`,
diff --git a/src/config.ts b/src/config.ts
index 5c3f6bc..5eb01e1 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -30,6 +30,8 @@ export const configSchema = z
     EMAIL_PROVIDER: z.enum(["NODE_MAILER", "AWS_SES"]).default("AWS_SES"),
     BASE_PATH: z.string().default("").optional(),
     WHITELISTED_DOMAINS: z.array(z.string()).optional(),
+    // Used in `send-notification` endpoint for authentication if you do not want to use Saleor JWT verification.
+    AUTHORIZATION_TOKEN: z.string().optional(),
   })
   .and(commonConfigSchema)
   .and(appConfigSchema)
diff --git a/src/const.ts b/src/const.ts
new file mode 100644
index 0000000..1c0782a
--- /dev/null
+++ b/src/const.ts
@@ -0,0 +1,46 @@
+import { z } from "zod";
+
+import { type WebhookEventTypeAsyncEnum } from "./graphql/schema";
+
+/**
+ * Define your Saleor supported events.
+ * Note:
+ * Saleor uses uppercase events names only in app manifest. In other places,
+ * like headers they are lower case so we are using that convention.
+ */
+export const SALEOR_EVENTS = [
+  "account_confirmation_requested",
+  "account_confirmed",
+  "account_set_password_requested",
+  "account_delete_requested",
+  "account_deleted",
+  "account_change_email_requested",
+  "account_email_changed",
+  "order_created",
+  "order_cancelled",
+  "order_refunded",
+  "fulfillment_tracking_number_updated",
+  "fulfillment_created",
+  "gift_card_sent",
+] as const satisfies Lowercase<WebhookEventTypeAsyncEnum>[];
+/**
+ * Define your custom events.
+ */
+export const CUSTOM_EVENTS = ["custom_event"] as const;
+
+export const EMAIL_EVENTS = [...SALEOR_EVENTS, ...CUSTOM_EVENTS] as const;
+
+export type SaleorEventType = (typeof SALEOR_EVENTS)[number];
+export type CustomEventType = (typeof CUSTOM_EVENTS)[number];
+export type EmailEventType = SaleorEventType | CustomEventType;
+
+/**
+ * Define your custom events body schema.
+ */
+export const CUSTOM_EVENTS_SCHEMA = {
+  custom_event: z.object({
+    name: z.string(),
+    email: z.string(),
+    channel: z.string(),
+  }),
+} satisfies Record<CustomEventType, z.ZodTypeAny>;
diff --git a/src/emails/templates/custom/CustomEventEmail.tsx b/src/emails/templates/custom/CustomEventEmail.tsx
new file mode 100644
index 0000000..4752aad
--- /dev/null
+++ b/src/emails/templates/custom/CustomEventEmail.tsx
@@ -0,0 +1,39 @@
+import { type z } from "zod";
+
+import { type CUSTOM_EVENTS_SCHEMA } from "@/const";
+import Header from "@/emails/components/Header";
+import Layout from "@/emails/components/Layout";
+import Text from "@/emails/components/Text";
+import { type CustomEventData } from "@/lib/types";
+
+type CustomEventEmailProps = CustomEventData<
+  z.infer<(typeof CUSTOM_EVENTS_SCHEMA)["custom_event"]>
+>;
+
+const CustomEventEmail = ({
+  data: { channel, email, name },
+}: CustomEventEmailProps) => {
+  return (
+    <Layout channel={channel} previewText="Custom event">
+      {() => (
+        <>
+          <Header>Hi {name}!</Header>
+          <Text>This is a custom email event sent by the Mirumee team.</Text>
+        </>
+      )}
+    </Layout>
+  );
+};
+
+const previewProps: CustomEventEmailProps = {
+  data: {
+    name: "Name",
+    email: "user@example.com",
+    channel: "channel-us",
+  },
+};
+
+CustomEventEmail.PreviewProps = previewProps;
+CustomEventEmail.Subject = "Custom event";
+
+export default CustomEventEmail;
diff --git a/src/emails/templates/AccountChangeEmailRequestedEmail.tsx b/src/emails/templates/saleor/AccountChangeEmailRequestedEmail.tsx
similarity index 87%
rename from src/emails/templates/AccountChangeEmailRequestedEmail.tsx
rename to src/emails/templates/saleor/AccountChangeEmailRequestedEmail.tsx
index 05ba403..7d44369 100644
--- a/src/emails/templates/AccountChangeEmailRequestedEmail.tsx
+++ b/src/emails/templates/saleor/AccountChangeEmailRequestedEmail.tsx
@@ -5,9 +5,12 @@ import Text from "@/emails/components/Text";
 import { type AccountChangeEmailRequestedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
+type AccountChangeEmailRequestedEmailProps =
+  EventData<AccountChangeEmailRequestedSubscription>;
+
 const AccountChangeEmailRequestedEmail = ({
   data,
-}: EventData<AccountChangeEmailRequestedSubscription>) => {
+}: AccountChangeEmailRequestedEmailProps) => {
   return (
     <Layout
       channel={data.channel?.slug}
@@ -34,7 +37,7 @@ const AccountChangeEmailRequestedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountChangeEmailRequestedSubscription> = {
+const previewProps: AccountChangeEmailRequestedEmailProps = {
   data: {
     redirectUrl: "https://example.com",
     user: {
diff --git a/src/emails/templates/AccountConfirmationRequestedEmail.tsx b/src/emails/templates/saleor/AccountConfirmationRequestedEmail.tsx
similarity index 86%
rename from src/emails/templates/AccountConfirmationRequestedEmail.tsx
rename to src/emails/templates/saleor/AccountConfirmationRequestedEmail.tsx
index 206bfc7..58a0ebd 100644
--- a/src/emails/templates/AccountConfirmationRequestedEmail.tsx
+++ b/src/emails/templates/saleor/AccountConfirmationRequestedEmail.tsx
@@ -5,9 +5,12 @@ import Text from "@/emails/components/Text";
 import { type AccountConfirmationRequestedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
+type AccountConfirmationRequestedEmailProps =
+  EventData<AccountConfirmationRequestedSubscription>;
+
 const AccountConfirmationRequestedEmail = ({
   data,
-}: EventData<AccountConfirmationRequestedSubscription>) => {
+}: AccountConfirmationRequestedEmailProps) => {
   return (
     <Layout
       channel={data.channel?.slug}
@@ -33,7 +36,7 @@ const AccountConfirmationRequestedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountConfirmationRequestedSubscription> = {
+const previewProps: AccountConfirmationRequestedEmailProps = {
   data: {
     redirectUrl: "https://example.com",
     user: {
diff --git a/src/emails/templates/AccountConfirmedEmail.tsx b/src/emails/templates/saleor/AccountConfirmedEmail.tsx
similarity index 74%
rename from src/emails/templates/AccountConfirmedEmail.tsx
rename to src/emails/templates/saleor/AccountConfirmedEmail.tsx
index d0f36a9..f8a6f48 100644
--- a/src/emails/templates/AccountConfirmedEmail.tsx
+++ b/src/emails/templates/saleor/AccountConfirmedEmail.tsx
@@ -4,11 +4,11 @@ import Text from "@/emails/components/Text";
 import { type AccountConfirmedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
-const AccountConfirmedEmail = ({
-  data,
-}: EventData<AccountConfirmedSubscription>) => {
+type AccountConfirmedEmailProps = EventData<AccountConfirmedSubscription>;
+
+const AccountConfirmedEmail = ({ data }: AccountConfirmedEmailProps) => {
   return (
-    <Layout channel={data.channel?.slug} previewText="Account Confirmed">
+    <Layout channel={data.channel?.slug} previewText="Account confirmed">
       {() => (
         <>
           <Header>Hi {data.user?.firstName}!</Header>
@@ -24,7 +24,7 @@ const AccountConfirmedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountConfirmedSubscription> = {
+const previewProps: AccountConfirmedEmailProps = {
   data: {
     user: {
       email: "user@example.com",
@@ -37,6 +37,6 @@ const previewProps: EventData<AccountConfirmedSubscription> = {
 };
 
 AccountConfirmedEmail.PreviewProps = previewProps;
-AccountConfirmedEmail.Subject = "Account Confirmed";
+AccountConfirmedEmail.Subject = "Account confirmed";
 
 export default AccountConfirmedEmail;
diff --git a/src/emails/templates/AccountDeleteRequestedEmail.tsx b/src/emails/templates/saleor/AccountDeleteRequestedEmail.tsx
similarity index 86%
rename from src/emails/templates/AccountDeleteRequestedEmail.tsx
rename to src/emails/templates/saleor/AccountDeleteRequestedEmail.tsx
index 4bb1db9..693ecf1 100644
--- a/src/emails/templates/AccountDeleteRequestedEmail.tsx
+++ b/src/emails/templates/saleor/AccountDeleteRequestedEmail.tsx
@@ -5,9 +5,12 @@ import Text from "@/emails/components/Text";
 import { type AccountDeleteRequestedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
+type AccountDeleteRequestedEmailProps =
+  EventData<AccountDeleteRequestedSubscription>;
+
 const AccountDeleteRequestedEmail = ({
   data,
-}: EventData<AccountDeleteRequestedSubscription>) => {
+}: AccountDeleteRequestedEmailProps) => {
   return (
     <Layout channel={data.channel?.slug} previewText="Account delete requested">
       {() => (
@@ -29,7 +32,7 @@ const AccountDeleteRequestedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountDeleteRequestedSubscription> = {
+const previewProps: AccountDeleteRequestedEmailProps = {
   data: {
     redirectUrl: "https://example.com",
     user: {
diff --git a/src/emails/templates/AccountDeletedEmail.tsx b/src/emails/templates/saleor/AccountDeletedEmail.tsx
similarity index 86%
rename from src/emails/templates/AccountDeletedEmail.tsx
rename to src/emails/templates/saleor/AccountDeletedEmail.tsx
index 912ca95..5caddf8 100644
--- a/src/emails/templates/AccountDeletedEmail.tsx
+++ b/src/emails/templates/saleor/AccountDeletedEmail.tsx
@@ -4,9 +4,9 @@ import Text from "@/emails/components/Text";
 import { type AccountDeletedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
-const AccountDeletedEmail = ({
-  data,
-}: EventData<AccountDeletedSubscription>) => {
+type AccountDeletedEmailProps = EventData<AccountDeletedSubscription>;
+
+const AccountDeletedEmail = ({ data }: AccountDeletedEmailProps) => {
   return (
     <Layout channel={data.channel?.slug} previewText="Account Deleted">
       {() => (
@@ -27,7 +27,7 @@ const AccountDeletedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountDeletedSubscription> = {
+const previewProps: AccountDeletedEmailProps = {
   data: {
     user: {
       email: "user@example.com",
diff --git a/src/emails/templates/AccountEmailChangedEmail.tsx b/src/emails/templates/saleor/AccountEmailChangedEmail.tsx
similarity index 80%
rename from src/emails/templates/AccountEmailChangedEmail.tsx
rename to src/emails/templates/saleor/AccountEmailChangedEmail.tsx
index 7d10e4d..b981b3e 100644
--- a/src/emails/templates/AccountEmailChangedEmail.tsx
+++ b/src/emails/templates/saleor/AccountEmailChangedEmail.tsx
@@ -4,9 +4,9 @@ import Text from "@/emails/components/Text";
 import { type AccountEmailChangedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
-const AccountEmailChangedEmail = ({
-  data,
-}: EventData<AccountEmailChangedSubscription>) => {
+type AccountEmailChangedEmailProps = EventData<AccountEmailChangedSubscription>;
+
+const AccountEmailChangedEmail = ({ data }: AccountEmailChangedEmailProps) => {
   return (
     <Layout channel={data.channel?.slug} previewText="Account email changed">
       {() => (
@@ -19,7 +19,7 @@ const AccountEmailChangedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountEmailChangedSubscription> = {
+const previewProps: AccountEmailChangedEmailProps = {
   data: {
     user: {
       email: "user@example.com",
diff --git a/src/emails/templates/AccountSetPasswordRequestedEmail.tsx b/src/emails/templates/saleor/AccountSetPasswordRequestedEmail.tsx
similarity index 83%
rename from src/emails/templates/AccountSetPasswordRequestedEmail.tsx
rename to src/emails/templates/saleor/AccountSetPasswordRequestedEmail.tsx
index ced2028..6b407cb 100644
--- a/src/emails/templates/AccountSetPasswordRequestedEmail.tsx
+++ b/src/emails/templates/saleor/AccountSetPasswordRequestedEmail.tsx
@@ -1,14 +1,16 @@
+import Header from "@/emails/components/Header";
 import Layout from "@/emails/components/Layout";
 import Link from "@/emails/components/Link";
 import Text from "@/emails/components/Text";
 import { type AccountSetPasswordRequestedSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
-import Header from "../components/Header";
+type AccountSetPasswordRequestedEmailProps =
+  EventData<AccountSetPasswordRequestedSubscription>;
 
 const AccountSetPasswordRequestedEmail = ({
   data,
-}: EventData<AccountSetPasswordRequestedSubscription>) => {
+}: AccountSetPasswordRequestedEmailProps) => {
   return (
     <Layout
       channel={data.channel?.slug}
@@ -34,7 +36,7 @@ const AccountSetPasswordRequestedEmail = ({
   );
 };
 
-const previewProps: EventData<AccountSetPasswordRequestedSubscription> = {
+const previewProps: AccountSetPasswordRequestedEmailProps = {
   data: {
     redirectUrl: "https://example.com",
     user: {
diff --git a/src/emails/templates/FulfillmentCreatedEmail.tsx b/src/emails/templates/saleor/FulfillmentCreatedEmail.tsx
similarity index 94%
rename from src/emails/templates/FulfillmentCreatedEmail.tsx
rename to src/emails/templates/saleor/FulfillmentCreatedEmail.tsx
index e3957d2..00105ee 100644
--- a/src/emails/templates/FulfillmentCreatedEmail.tsx
+++ b/src/emails/templates/saleor/FulfillmentCreatedEmail.tsx
@@ -10,9 +10,9 @@ import { type FulfillmentCreatedSubscription } from "@/graphql/operations/subscr
 import { orderLineToLine } from "@/lib/saleor/utils";
 import { type EventData } from "@/lib/types";
 
-const FulfillmentCreatedEmail = ({
-  data,
-}: EventData<FulfillmentCreatedSubscription>) => {
+type FulfillmentCreatedEmailProps = EventData<FulfillmentCreatedSubscription>;
+
+const FulfillmentCreatedEmail = ({ data }: FulfillmentCreatedEmailProps) => {
   const order = data!.order!;
 
   return (
@@ -67,7 +67,7 @@ const FulfillmentCreatedEmail = ({
   );
 };
 
-const previewProps: EventData<FulfillmentCreatedSubscription> = {
+const previewProps: FulfillmentCreatedEmailProps = {
   data: {
     order: {
       number: "941",
diff --git a/src/emails/templates/FulfillmentTrackingNumberUpdatedEmail.tsx b/src/emails/templates/saleor/FulfillmentTrackingNumberUpdatedEmail.tsx
similarity index 95%
rename from src/emails/templates/FulfillmentTrackingNumberUpdatedEmail.tsx
rename to src/emails/templates/saleor/FulfillmentTrackingNumberUpdatedEmail.tsx
index fb6ca7a..403eedf 100644
--- a/src/emails/templates/FulfillmentTrackingNumberUpdatedEmail.tsx
+++ b/src/emails/templates/saleor/FulfillmentTrackingNumberUpdatedEmail.tsx
@@ -12,9 +12,12 @@ import { orderLineToLine } from "@/lib/saleor/utils";
 import { type EventData } from "@/lib/types";
 import { isURL } from "@/lib/utils";
 
+type FulfillmentTrackingNumberUpdatedEmailProps =
+  EventData<FulfillmentTrackingNumberUpdatedSubscription>;
+
 const FulfillmentTrackingNumberUpdatedEmail = ({
   data,
-}: EventData<FulfillmentTrackingNumberUpdatedSubscription>) => {
+}: FulfillmentTrackingNumberUpdatedEmailProps) => {
   const order = data!.order!;
 
   return (
@@ -81,7 +84,7 @@ const FulfillmentTrackingNumberUpdatedEmail = ({
   );
 };
 
-const previewProps: EventData<FulfillmentTrackingNumberUpdatedSubscription> = {
+const previewProps: FulfillmentTrackingNumberUpdatedEmailProps = {
   data: {
     order: {
       number: "941",
diff --git a/src/emails/templates/GiftCardSentEmail.tsx b/src/emails/templates/saleor/GiftCardSentEmail.tsx
similarity index 88%
rename from src/emails/templates/GiftCardSentEmail.tsx
rename to src/emails/templates/saleor/GiftCardSentEmail.tsx
index 807a76a..aaa52c1 100644
--- a/src/emails/templates/GiftCardSentEmail.tsx
+++ b/src/emails/templates/saleor/GiftCardSentEmail.tsx
@@ -7,7 +7,9 @@ import Text from "@/emails/components/Text";
 import { type GiftCardSentSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
-const GiftCardSentEmail = ({ data }: EventData<GiftCardSentSubscription>) => {
+type GiftCardSentEmailProps = EventData<GiftCardSentSubscription>;
+
+const GiftCardSentEmail = ({ data }: GiftCardSentEmailProps) => {
   return (
     <Layout channel={data.channel} previewText="Gift card sent">
       {() => (
@@ -28,7 +30,7 @@ const GiftCardSentEmail = ({ data }: EventData<GiftCardSentSubscription>) => {
   );
 };
 
-const previewProps: EventData<GiftCardSentSubscription> = {
+const previewProps: GiftCardSentEmailProps = {
   data: {
     sentToEmail: "user@example.com",
     channel: "channel-us",
diff --git a/src/emails/templates/OrderCancelledEmail.tsx b/src/emails/templates/saleor/OrderCancelledEmail.tsx
similarity index 85%
rename from src/emails/templates/OrderCancelledEmail.tsx
rename to src/emails/templates/saleor/OrderCancelledEmail.tsx
index c2ee5a4..338a63f 100644
--- a/src/emails/templates/OrderCancelledEmail.tsx
+++ b/src/emails/templates/saleor/OrderCancelledEmail.tsx
@@ -4,9 +4,9 @@ import Text from "@/emails/components/Text";
 import { type OrderCancelledSubscription } from "@/graphql/operations/subscriptions/generated";
 import { type EventData } from "@/lib/types";
 
-const OrderCancelledEmail = ({
-  data,
-}: EventData<OrderCancelledSubscription>) => {
+type OrderCancelledEmailProps = EventData<OrderCancelledSubscription>;
+
+const OrderCancelledEmail = ({ data }: OrderCancelledEmailProps) => {
   const order = data!.order!;
 
   return (
@@ -28,7 +28,7 @@ const OrderCancelledEmail = ({
   );
 };
 
-const previewProps: EventData<OrderCancelledSubscription> = {
+const previewProps: OrderCancelledEmailProps = {
   data: {
     order: {
       channel: {
diff --git a/src/emails/templates/OrderCreatedEmail.tsx b/src/emails/templates/saleor/OrderCreatedEmail.tsx
similarity index 95%
rename from src/emails/templates/OrderCreatedEmail.tsx
rename to src/emails/templates/saleor/OrderCreatedEmail.tsx
index 1b5a963..ab7a672 100644
--- a/src/emails/templates/OrderCreatedEmail.tsx
+++ b/src/emails/templates/saleor/OrderCreatedEmail.tsx
@@ -8,7 +8,9 @@ import { type OrderCreatedSubscription } from "@/graphql/operations/subscription
 import { orderLineToLine } from "@/lib/saleor/utils";
 import { type EventData } from "@/lib/types";
 
-const OrderCreatedEmail = ({ data }: EventData<OrderCreatedSubscription>) => {
+type OrderCreatedEmailProps = EventData<OrderCreatedSubscription>;
+
+const OrderCreatedEmail = ({ data }: OrderCreatedEmailProps) => {
   const order = data.order!;
 
   return (
@@ -62,7 +64,7 @@ const OrderCreatedEmail = ({ data }: EventData<OrderCreatedSubscription>) => {
   );
 };
 
-const previewProps: EventData<OrderCreatedSubscription> = {
+const previewProps: OrderCreatedEmailProps = {
   data: {
     order: {
       number: "939",
diff --git a/src/emails/templates/OrderRefundedEmail.tsx b/src/emails/templates/saleor/OrderRefundedEmail.tsx
similarity index 95%
rename from src/emails/templates/OrderRefundedEmail.tsx
rename to src/emails/templates/saleor/OrderRefundedEmail.tsx
index 9becdc5..fe03298 100644
--- a/src/emails/templates/OrderRefundedEmail.tsx
+++ b/src/emails/templates/saleor/OrderRefundedEmail.tsx
@@ -8,7 +8,9 @@ import { type OrderRefundedSubscription } from "@/graphql/operations/subscriptio
 import { orderLineToLine } from "@/lib/saleor/utils";
 import { type EventData } from "@/lib/types";
 
-const OrderRefundedEmail = ({ data }: EventData<OrderRefundedSubscription>) => {
+type OrderRefundedEmailProps = EventData<OrderRefundedSubscription>;
+
+const OrderRefundedEmail = ({ data }: OrderRefundedEmailProps) => {
   const order = data!.order!;
 
   return (
@@ -60,7 +62,7 @@ const OrderRefundedEmail = ({ data }: EventData<OrderRefundedSubscription>) => {
   );
 };
 
-const previewProps: EventData<OrderRefundedSubscription> = {
+const previewProps: OrderRefundedEmailProps = {
   data: {
     order: {
       number: "939",
diff --git a/src/lib/emails/const.ts b/src/lib/emails/const.ts
index 7a10f81..3039a3f 100644
--- a/src/lib/emails/const.ts
+++ b/src/lib/emails/const.ts
@@ -1,19 +1,20 @@
 import { type ComponentType } from "react";
 
-import AccountChangeEmailRequestedEmail from "@/emails/templates/AccountChangeEmailRequestedEmail";
-import AccountConfirmationRequestedEmail from "@/emails/templates/AccountConfirmationRequestedEmail";
-import AccountConfirmedEmail from "@/emails/templates/AccountConfirmedEmail";
-import AccountDeletedEmail from "@/emails/templates/AccountDeletedEmail";
-import AccountDeleteRequestedEmail from "@/emails/templates/AccountDeleteRequestedEmail";
-import AccountEmailChangedEmail from "@/emails/templates/AccountEmailChangedEmail";
-import AccountSetPasswordRequestedEmail from "@/emails/templates/AccountSetPasswordRequestedEmail";
-import FulfillmentCreatedEmail from "@/emails/templates/FulfillmentCreatedEmail";
-import FulfillmentTrackingNumberUpdatedEmail from "@/emails/templates/FulfillmentTrackingNumberUpdatedEmail";
-import GiftCardSentEmail from "@/emails/templates/GiftCardSentEmail";
-import OrderCancelledEmail from "@/emails/templates/OrderCancelledEmail";
-import OrderCreatedEmail from "@/emails/templates/OrderCreatedEmail";
-import OrderRefundedEmail from "@/emails/templates/OrderRefundedEmail";
-import { type Event } from "@/lib/payload";
+import { type EmailEventType } from "@/const";
+import CustomEventEmail from "@/emails/templates/custom/CustomEventEmail";
+import AccountChangeEmailRequestedEmail from "@/emails/templates/saleor/AccountChangeEmailRequestedEmail";
+import AccountConfirmationRequestedEmail from "@/emails/templates/saleor/AccountConfirmationRequestedEmail";
+import AccountConfirmedEmail from "@/emails/templates/saleor/AccountConfirmedEmail";
+import AccountDeletedEmail from "@/emails/templates/saleor/AccountDeletedEmail";
+import AccountDeleteRequestedEmail from "@/emails/templates/saleor/AccountDeleteRequestedEmail";
+import AccountEmailChangedEmail from "@/emails/templates/saleor/AccountEmailChangedEmail";
+import AccountSetPasswordRequestedEmail from "@/emails/templates/saleor/AccountSetPasswordRequestedEmail";
+import FulfillmentCreatedEmail from "@/emails/templates/saleor/FulfillmentCreatedEmail";
+import FulfillmentTrackingNumberUpdatedEmail from "@/emails/templates/saleor/FulfillmentTrackingNumberUpdatedEmail";
+import GiftCardSentEmail from "@/emails/templates/saleor/GiftCardSentEmail";
+import OrderCancelledEmail from "@/emails/templates/saleor/OrderCancelledEmail";
+import OrderCreatedEmail from "@/emails/templates/saleor/OrderCreatedEmail";
+import OrderRefundedEmail from "@/emails/templates/saleor/OrderRefundedEmail";
 
 const extractEmailFromOrder = (data: { order: { userEmail: string } }) =>
   data.order.userEmail;
@@ -24,8 +25,10 @@ const extractEmailFromGiftCard = (data: { sentToEmail: string }) =>
 const extractEmailFromUser = (data: { user: { email: string } }) =>
   data.user.email;
 
+const extractEmailFromCustomEvent = (data: { email: string }) => data.email;
+
 export const TEMPLATES_MAP: {
-  [key in Event]?: {
+  [key in EmailEventType]?: {
     extractFn: (data: any) => string;
     template: ComponentType<any> & { Subject: string };
   };
@@ -82,4 +85,8 @@ export const TEMPLATES_MAP: {
     template: AccountChangeEmailRequestedEmail,
     extractFn: extractEmailFromUser,
   },
+  custom_event: {
+    template: CustomEventEmail,
+    extractFn: extractEmailFromCustomEvent,
+  },
 };
diff --git a/src/lib/payload.test.ts b/src/lib/payload.test.ts
index 8d4ca4f..01c6188 100644
--- a/src/lib/payload.test.ts
+++ b/src/lib/payload.test.ts
@@ -2,20 +2,17 @@ import { type SQSRecord } from "aws-lambda";
 import { describe, expect, it } from "vitest";
 import { z } from "zod";
 
+import { EMAIL_EVENTS } from "@/const";
+
 import { ParsePayloadError } from "./errors/serverless";
-import {
-  parsePayload,
-  parseRecord,
-  serializePayload,
-  SUPPORTED_EVENTS,
-} from "./payload";
+import { parsePayload, parseRecord, serializePayload } from "./payload";
 
 describe("payload", () => {
   describe("serializePayload", () => {
     it("should serialize payload correctly when valid data is provided", () => {
       // given
       const mockData = { key: "value" };
-      const mockEvent = SUPPORTED_EVENTS[0];
+      const mockEvent = EMAIL_EVENTS[0];
 
       // when
       const serialized = serializePayload({
@@ -102,7 +99,7 @@ describe("payload", () => {
       // given
       const data = {
         payload: {
-          event: SUPPORTED_EVENTS[0],
+          event: EMAIL_EVENTS[0],
           data: { key: "value" },
         },
         format: "any",
diff --git a/src/lib/payload.ts b/src/lib/payload.ts
index ebc38f0..d975048 100644
--- a/src/lib/payload.ts
+++ b/src/lib/payload.ts
@@ -2,22 +2,15 @@ import { type SQSRecord } from "aws-lambda";
 import { type FastifyRequest } from "fastify";
 import { z } from "zod";
 
-import { EVENT_HANDLERS } from "@/api/rest/saleor/webhooks";
 import { CONFIG } from "@/config";
-import { type WebhookEventTypeAsyncEnum } from "@/graphql/schema";
+import { EMAIL_EVENTS, type EmailEventType } from "@/const";
 import { ParsePayloadError } from "@/lib/errors/serverless";
 
-export const SUPPORTED_EVENTS = EVENT_HANDLERS.map(({ event }) =>
-  event.toLowerCase()
-) as any as z.EnumValues<Lowercase<WebhookEventTypeAsyncEnum>>;
-
-export type Event = (typeof SUPPORTED_EVENTS)[number];
-
 export const payloadSchema = z.object({
   format: z.string(),
   payload: z.object({
     data: z.object({}).passthrough(),
-    event: z.enum(SUPPORTED_EVENTS),
+    event: z.enum(EMAIL_EVENTS),
   }),
 });
 
@@ -26,7 +19,7 @@ export const serializePayload = ({
   event,
 }: {
   data: FastifyRequest["body"];
-  event: Event;
+  event: EmailEventType;
 }) =>
   payloadSchema.parse({
     format: getJSONFormatHeader({ name: CONFIG.NAME }),
diff --git a/src/lib/saleor/schema.ts b/src/lib/saleor/schema.ts
index 1aefafd..3ce1ecd 100644
--- a/src/lib/saleor/schema.ts
+++ b/src/lib/saleor/schema.ts
@@ -1,25 +1,21 @@
 import { z } from "zod";
 
-import { type WebhookEventTypeAsyncEnum } from "@/graphql/schema";
+import { SALEOR_EVENTS } from "@/const";
 
 /**
- * Headers must be in lowercase, otherwise it will not be lookup by zod type provider.
+ * Headers must be in lowercase, otherwise, it will not be looked up by Zod type provider.
  */
 export const saleorHeaders = z.object({
   "saleor-domain": z.string(),
   "saleor-api-url": z.string(),
 });
-
 export type SaleorHeaders = z.infer<typeof saleorHeaders>;
 
-export const saleorWebhookHeaders = (
-  z.object({
-    "saleor-event": z.string(),
-  }) as unknown as z.ZodObject<{
-    "saleor-event": z.ZodLiteral<Lowercase<WebhookEventTypeAsyncEnum>>;
-  }>
-)
-  .and(z.object({ "saleor-signature": z.string() }))
+export const saleorWebhookHeaders = z
+  .object({
+    "saleor-event": z.enum(SALEOR_EVENTS),
+    "saleor-signature": z.string(),
+  })
   .and(saleorHeaders);
 
 export type SaleorWebhookHeaders = z.infer<typeof saleorWebhookHeaders>;
@@ -27,5 +23,4 @@ export type SaleorWebhookHeaders = z.infer<typeof saleorWebhookHeaders>;
 export const saleorBearerHeader = z.object({
   authorization: z.string().transform((value) => value.replace("Bearer ", "")),
 });
-
 export type SaleorBearerHeader = z.infer<typeof saleorBearerHeader>;
diff --git a/src/lib/types.ts b/src/lib/types.ts
index 3a3eda1..1a6ebfd 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -12,4 +12,8 @@ export type EventData<T extends { event: unknown }> = {
   data: NonNullable<T["event"]>;
 };
 
+export type CustomEventData<T extends object> = {
+  data: NonNullable<T>;
+};
+
 export type PartialBy<T, K extends keyof T> = Pick<Partial<T>, K> & Omit<T, K>;