The ability to specify whether or not attached images are displayed by default while viewing a message, as with the [view remote images] option. When one views a message with many large images attached, it can take ages to load - being able to choose this behaviour would be a big bonus!
Not to mention, the spammers who use external image urls for tracking who reads what mail, which puts people on the more pricey spammer lists. _______________________________________________ List info: http://lists.roundcube.net/users/