Support download email file in browser

app/s3.py

@@ -34,7 +34,28 @@ def upload_from_bytesio(key: str, bs: BytesIO, content_type="string"):
 
     else:
         _session.resource("s3").Bucket(BUCKET).put_object(
-            Key=key, Body=bs, ContentType=content_type
+            Key=key, Body=bs, ContentType=content_type,
+        )
+
+
+def upload_email_from_bytesio(path: str, bs: BytesIO, filename):
+    bs.seek(0)
+
+    if LOCAL_FILE_UPLOAD:
+        file_path = os.path.join(UPLOAD_DIR, path)
+        file_dir = os.path.dirname(file_path)
+        os.makedirs(file_dir, exist_ok=True)
+        with open(file_path, "wb") as f:
+            f.write(bs.read())
+
+    else:
+        _session.resource("s3").Bucket(BUCKET).put_object(
+            Key=path,
+            Body=bs,
+            # Support saving a remote file using Http header
+            # Also supports Safari. More info at
+            # https://github.com/eligrey/FileSaver.js/wiki/Saving-a-remote-file#using-http-header
+            ContentDisposition=f'attachment; filename="{filename}.eml";',
         )
 
 

email_handler.py

@@ -30,6 +30,7 @@ It should contain the following info:
 
 
 """
+import uuid
 import time
 from email import encoders
 from email.message import Message
@@ -540,14 +541,15 @@ def handle_bounce(
     disable_alias_link = f"{URL}/dashboard/unsubscribe/{gen_email.id}"
 
     # Store the bounced email
-    random_name = random_string(50)
+    orig_msg = get_orig_message_from_bounce(msg)
+    # generate a name for the email
+    random_name = str(uuid.uuid4())
 
     full_report_path = f"refused-emails/full-{random_name}.eml"
-    s3.upload_from_bytesio(full_report_path, BytesIO(msg.as_bytes()))
+    s3.upload_email_from_bytesio(full_report_path, BytesIO(msg.as_bytes()), random_name)
 
     file_path = f"refused-emails/{random_name}.eml"
-    orig_msg = get_orig_message_from_bounce(msg)
-    s3.upload_from_bytesio(file_path, BytesIO(orig_msg.as_bytes()))
+    s3.upload_email_from_bytesio(file_path, BytesIO(orig_msg.as_bytes()), random_name)
 
     refused_email = RefusedEmail.create(
         path=file_path, full_report_path=full_report_path, user_id=user.id

templates/emails/transactional/automatic-disable-alias.html

@@ -14,4 +14,5 @@
   {{ render_text('Please let us know if you have any question.') }}
 
   {{ render_text('Thanks, <br />SimpleLogin Team.') }}
+  {{ raw_url(refused_email_url) }}
 {% endblock %}