For the auto-responder, you can set the default character set. To do this, go to the ArGo Admin Console.Click the Gear Icon and select Default Settings -> User. In here you can set the default encoding and character set. It appears that the auto-responder is plain text, however have you tried inserting some HTML code and see how it comes through on the other end? As for a logo, it would have to be an image link and the source must be accessible via the net.

Sample:


I do not know of any other way to attach an image to an auto-responder via ArGo. If you use eWall or Mail Filter you could possibly create a rule and change the message to HTML.

That setting will take effect when you add the next new user. For existing accounts you will have to go to each user in the Admin console and change the settings.