Would it be possible to store comments for mail aliases? This would be useful for storing the alias's "real name" or purpose, similar to the name field for a mailbox. It would be especially useful to associate with a full name when the alias destination is non-local, such as a forwarding address to another domain.
Comments are supported in the various alias files (aliases, sendmail virtusertable, postfix virtual, etc.), however there is no standard format for associating a particular comment with a specific alias. Comments must be on their own separate lines, so I would suggest a format like this:
# Virtualmin Comment: Joe Schmoe User's Real Name
joe@schmoe.com joeschmoe@gmail.com
The comment must immediately preceed the alias to create the association, and it must start with the string "# Virtualmin Comment: ". Alternatively, maybe the comment should say "# Webmin Comment: " instead, so this same format could be used with the sendmail and postfix Webmin modules directly, outside of Virtualmin.