diff --git a/email.go b/email.go
index 3543d88..7838486 100644
--- a/email.go
+++ b/email.go
@@ -1,11 +1,13 @@
+// Package gomail is a lightweight email package with multi-provider support
 package gomail
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"html/template"
 	"io"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/aymerick/douceur/inliner"
@@ -104,7 +106,7 @@ func (e *Email) ParseHTMLTemplate(htmlLocation string) (htmlTemplate *template.T
 
 	// Read HTML template file
 	var tempBytes []byte
-	if tempBytes, err = ioutil.ReadFile(htmlLocation); err != nil {
+	if tempBytes, err = os.ReadFile(htmlLocation); err != nil {
 		return
 	}
 
@@ -151,7 +153,7 @@ func (m *MailService) NewEmail() (email *Email) {
 }
 
 // SendEmail will send an email using the given provider
-func (m *MailService) SendEmail(email *Email, provider ServiceProvider) (err error) {
+func (m *MailService) SendEmail(ctx context.Context, email *Email, provider ServiceProvider) (err error) {
 
 	// Do we have that provider?
 	if containsServiceProvider(m.AvailableProviders, provider) {
@@ -184,7 +186,7 @@ func (m *MailService) SendEmail(email *Email, provider ServiceProvider) (err err
 		} else if provider == Mandrill {
 			err = sendViaMandrill(m.mandrillService, email, false)
 		} else if provider == Postmark {
-			err = sendViaPostmark(m.postmarkService, email)
+			err = sendViaPostmark(ctx, m.postmarkService, email)
 		} else if provider == SMTP {
 			err = sendViaSMTP(m.smtpClient, email)
 		}
diff --git a/email_test.go b/email_test.go
index fe491ae..7fa8d8d 100644
--- a/email_test.go
+++ b/email_test.go
@@ -1,9 +1,10 @@
 package gomail
 
 import (
+	"context"
 	"fmt"
 	"html/template"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"testing"
 )
@@ -215,7 +216,7 @@ func TestEmail_ApplyTemplates(t *testing.T) {
 	}
 
 	// Set the css theme
-	if email.CSS, err = ioutil.ReadFile(filepath.Join("examples", "example_theme.css")); err != nil {
+	if email.CSS, err = os.ReadFile(filepath.Join("examples", "example_theme.css")); err != nil {
 		t.Fatalf("%s: error occurred: %s", t.Name(), err.Error())
 	}
 
@@ -292,22 +293,22 @@ func TestMailService_SendEmail(t *testing.T) {
 	email.Recipients = append(email.Recipients, "someone@domain.com")
 
 	// Valid (Postmark)
-	if err = mail.SendEmail(email, Postmark); err != nil {
+	if err = mail.SendEmail(context.Background(), email, Postmark); err != nil {
 		t.Fatalf("%s: error occurred: %s", t.Name(), err.Error())
 	}
 
 	// Valid (AWS SES)
-	if err = mail.SendEmail(email, AwsSes); err != nil {
+	if err = mail.SendEmail(context.Background(), email, AwsSes); err != nil {
 		t.Fatalf("%s: error occurred: %s", t.Name(), err.Error())
 	}
 
 	// Valid (Mandrill)
-	if err = mail.SendEmail(email, Mandrill); err != nil {
+	if err = mail.SendEmail(context.Background(), email, Mandrill); err != nil {
 		t.Fatalf("%s: error occurred: %s", t.Name(), err.Error())
 	}
 
 	// Valid (SMTP)
-	if err = mail.SendEmail(email, SMTP); err != nil {
+	if err = mail.SendEmail(context.Background(), email, SMTP); err != nil {
 		t.Fatalf("%s: error occurred: %s", t.Name(), err.Error())
 	}
 }
@@ -339,33 +340,33 @@ func TestMailService_SendEmailInValid(t *testing.T) {
 	email := mail.NewEmail()
 
 	// Invalid provider
-	err = mail.SendEmail(email, 999)
+	err = mail.SendEmail(context.Background(), email, 999)
 	if err == nil {
 		t.Fatalf("%s: error was expected, provider was invalid", t.Name())
 	}
 
 	// Invalid provider - not in available list
-	err = mail.SendEmail(email, AwsSes)
+	err = mail.SendEmail(context.Background(), email, AwsSes)
 	if err == nil {
 		t.Fatalf("%s: error was expected, provider was not in available list", t.Name())
 	}
 
 	// Invalid - subject
-	err = mail.SendEmail(email, Postmark)
+	err = mail.SendEmail(context.Background(), email, Postmark)
 	if err == nil {
 		t.Fatalf("%s: error was expected, subject was invalid", t.Name())
 	}
 	email.Subject = "Subject exits now"
 
 	// Invalid - plain text missing
-	err = mail.SendEmail(email, Postmark)
+	err = mail.SendEmail(context.Background(), email, Postmark)
 	if err == nil {
 		t.Fatalf("%s: error was expected, subject was invalid", t.Name())
 	}
 	email.PlainTextContent = "Plain text exits now"
 
 	// Invalid - recipients missing
-	err = mail.SendEmail(email, Postmark)
+	err = mail.SendEmail(context.Background(), email, Postmark)
 	if err == nil {
 		t.Fatalf("%s: error was expected, subject was invalid", t.Name())
 	}
@@ -375,7 +376,7 @@ func TestMailService_SendEmailInValid(t *testing.T) {
 	for recipients := 1; recipients <= maxToRecipients+1; recipients++ {
 		email.Recipients = append(email.Recipients, "someone@domain.com")
 	}
-	if err = mail.SendEmail(email, Postmark); err == nil {
+	if err = mail.SendEmail(context.Background(), email, Postmark); err == nil {
 		t.Fatalf("%s: error was expected, too many recipients, amount: %d", t.Name(), len(email.Recipients))
 	}
 	email.Recipients = []string{"someone@domain.com"}
@@ -384,7 +385,7 @@ func TestMailService_SendEmailInValid(t *testing.T) {
 	for recipients := 1; recipients <= maxCcRecipients+1; recipients++ {
 		email.RecipientsCc = append(email.RecipientsCc, "someone@domain.com")
 	}
-	if err = mail.SendEmail(email, Postmark); err == nil {
+	if err = mail.SendEmail(context.Background(), email, Postmark); err == nil {
 		t.Fatalf("%s: error was expected, too many recipients, amount: %d", t.Name(), len(email.RecipientsCc))
 	}
 	email.RecipientsCc = []string{"someone@domain.com"}
@@ -393,7 +394,7 @@ func TestMailService_SendEmailInValid(t *testing.T) {
 	for recipients := 1; recipients <= maxBccRecipients+1; recipients++ {
 		email.RecipientsBcc = append(email.RecipientsBcc, "someone@domain.com")
 	}
-	if err = mail.SendEmail(email, Postmark); err == nil {
+	if err = mail.SendEmail(context.Background(), email, Postmark); err == nil {
 		t.Fatalf("%s: error was expected, too many recipients, amount: %d", t.Name(), len(email.RecipientsBcc))
 	}
 }
diff --git a/mandrill.go b/mandrill.go
index f5a88da..4a7a499 100644
--- a/mandrill.go
+++ b/mandrill.go
@@ -4,7 +4,7 @@ import (
 	"bufio"
 	"encoding/base64"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"strings"
 
 	"github.com/mattbaird/gochimp"
@@ -82,7 +82,7 @@ func sendViaMandrill(client mandrillInterface, email *Email, async bool) (err er
 		// Read all content from the attachment
 		reader := bufio.NewReader(attachment.FileReader)
 		var content []byte
-		if content, err = ioutil.ReadAll(reader); err != nil {
+		if content, err = io.ReadAll(reader); err != nil {
 			return
 		}