We have just added an enhancements to the way dropboxes function for incidents categories in emails.
As you may know, when creating categories for incidents, you can specify unique dropbox email addresses per category. This is done under setup -> categories.
The new enhancement enables you to define that this address is also displayed as the "reply-to" address in the emails sent. If this is not specified, than the default email address as defined in your email settings setup is used.
At your service,
The Samanage Team