diff --git a/SendSlackMessage/Entities/Attachment.cs b/SendSlackMessage/Entities/Attachment.cs
new file mode 100644
index 0000000..ba8df0d
--- /dev/null
+++ b/SendSlackMessage/Entities/Attachment.cs
@@ -0,0 +1,110 @@
+using SendSlackMessage.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace SendSlackMessage.Entities
+{
+    public class Attachment
+    {
+        [JsonPropertyName("fallback")]
+        public string Fallback { get; set; }
+
+        [JsonPropertyName("text")]
+        public string Text { get; set; }
+
+        [JsonPropertyName("pretext")]
+        public string Pretext { get; set; }
+
+        [JsonPropertyName("fields")]
+        public List<Field> Fields { get; set; } = new List<Field>();
+        /// <summary>
+        ///     Can either be one of 'good', 'warning', 'danger', or any hex color code
+        /// </summary>
+        [JsonPropertyName("color")]
+        public string Color { get; set; }
+
+        [JsonPropertyName("author_name")]
+        public string AuthorName { get; set; }
+
+        [JsonPropertyName("author_link")]
+        public string AuthorLink { get; set; }
+
+        [JsonPropertyName("author_icon")]
+        public string AuthorIcon { get; set; }
+
+        [JsonPropertyName("title_link")]
+        public string TitleLink { get; set; }
+
+        [JsonPropertyName("image_url")]
+        public string ImageUrl { get; set; }
+
+        [JsonPropertyName("thumb_url")]
+        public string ThumbUrl { get; set; }
+
+        [JsonPropertyName("footer")]
+        public string Footer { get; set; }
+        [JsonPropertyName("footer_icon")]
+        public string FooterIcon { get; set; }
+
+        [JsonPropertyName("ts")]
+        public string FooterTimeStamp { get; set; }
+
+        public Attachment() {  }
+        public Attachment SetFooter(string footerText, string footerIcon/*, DateTime footerTimeStamp*/)
+        {
+            Footer = footerText;
+            FooterIcon = footerIcon;
+            //lack set FooterTimeStamp
+            return this;
+        }
+
+        public Attachment AddField(string title, string value, bool _short = false)
+        {
+            Fields.Add(new Field
+            {
+                Title = title,
+                Value = value,
+                Short = _short
+            });
+
+            return this;
+        }
+
+        public Attachment SetAuthor(string authorName, string authorLink = null, string authorIcon = null)
+        {
+            AuthorName = authorName;
+            AuthorLink = authorLink;
+            AuthorIcon = authorIcon;
+            return this;
+        }
+
+        public Attachment SetColor(EnumColor color)
+        {
+            switch(color)
+            {
+                case EnumColor.Green:
+                    Color = "good";
+                    break;
+                case EnumColor.Orange:
+                    Color = "warning";
+                    break;
+                case EnumColor.Red:
+                    Color = "danger";
+                    break;
+                default:
+                    Color = null;
+                    break;
+            }
+            return this;
+        }
+        public Attachment SetColor(string hexCodeColor)
+        {
+            Color = hexCodeColor;
+            return this;
+        }
+    }
+}
diff --git a/SendSlackMessage/Entities/Field.cs b/SendSlackMessage/Entities/Field.cs
new file mode 100644
index 0000000..30637d3
--- /dev/null
+++ b/SendSlackMessage/Entities/Field.cs
@@ -0,0 +1,15 @@
+using System.Text.Json.Serialization;
+
+namespace SendSlackMessage.Entities
+{
+    public class Field
+    {
+
+        [JsonPropertyName("title")]
+        public string Title { get; set; }
+        [JsonPropertyName("value")]
+        public string Value { get; set; }
+        [JsonPropertyName("short")]
+        public bool Short { get; set; }
+    }
+}
diff --git a/SendSlackMessage/Entities/Message.cs b/SendSlackMessage/Entities/Message.cs
index f6b3f9c..7f951b9 100644
--- a/SendSlackMessage/Entities/Message.cs
+++ b/SendSlackMessage/Entities/Message.cs
@@ -29,6 +29,10 @@ public class Message
         [JsonPropertyName("response_type")]
         private string ResponseType { get => string.IsNullOrWhiteSpace(_responseType) ? "ephemeral" : _responseType; set => _responseType = value; }
 
+
+        [JsonPropertyName("attachments")]
+        public List<Attachment> Attachments { get; set; }
+
         public Message(string channel, string username, string iconEmoji, string iconUrl, string text, bool markdown = true)
         {
             Channel = channel;
diff --git a/SendSlackMessage/Enums/EnumColor.cs b/SendSlackMessage/Enums/EnumColor.cs
new file mode 100644
index 0000000..30b9a90
--- /dev/null
+++ b/SendSlackMessage/Enums/EnumColor.cs
@@ -0,0 +1,9 @@
+namespace SendSlackMessage.Enums
+{
+    public enum EnumColor
+    {
+        Red,
+        Orange,
+        Green
+    }
+}