diff --git a/src/activities/Elsa.Activities.Email/Activities/SendEmail/EmailAttachment.cs b/src/activities/Elsa.Activities.Email/Activities/SendEmail/EmailAttachment.cs
index 591b826e5..7f7e2f960 100644
--- a/src/activities/Elsa.Activities.Email/Activities/SendEmail/EmailAttachment.cs
+++ b/src/activities/Elsa.Activities.Email/Activities/SendEmail/EmailAttachment.cs
@@ -1,5 +1,5 @@
 // ReSharper disable once CheckNamespace
 namespace Elsa.Activities.Email
 {
-    public record EmailAttachment(byte[] Content, string? FileName, string? ContentType);
+    public record EmailAttachment(object Content, string? FileName, string? ContentType);
 }
\ No newline at end of file
diff --git a/src/activities/Elsa.Activities.Email/Activities/SendEmail/SendEmail.cs b/src/activities/Elsa.Activities.Email/Activities/SendEmail/SendEmail.cs
index 2f80d34b7..635c259ed 100644
--- a/src/activities/Elsa.Activities.Email/Activities/SendEmail/SendEmail.cs
+++ b/src/activities/Elsa.Activities.Email/Activities/SendEmail/SendEmail.cs
@@ -136,7 +136,14 @@ namespace Elsa.Activities.Email
                         {
                             var fileName = emailAttachment.FileName ?? $"Attachment-{++index}";
                             var contentType = emailAttachment.ContentType ?? "application/binary";
-                            bodyBuilder.Attachments.Add(fileName, emailAttachment.Content, ContentType.Parse(contentType));
+                            var parsedContentType = ContentType.Parse(contentType);
+                            
+                            if(emailAttachment.Content is byte[] bytes)
+                                bodyBuilder.Attachments.Add(fileName, bytes, parsedContentType);
+                            
+                            else if(emailAttachment.Content is Stream stream)
+                                await bodyBuilder.Attachments.AddAsync(fileName, stream, parsedContentType, cancellationToken);
+                            
                             break;
                         }
                         default: