(Please Up-Vote if you agree.)

Customer has over 1500 users.  They send broadcast emails to all employees.  They could have created a Mailing List, but they regularly hire and terminate, so it would be a lot of work to constantly add and delete addresses from a list that large.  

As an alternative, they created an alias "all_users@domain.com" and instead of keying in all 1500+ users, they just clicked the "Include all domain users" switch instead.  Quick and easy, and best of all, it needs ZERO maintenance because new mailboxes are automatically included as recipients.

Problem:  They have a small number of temp/contracted users who should NOT receive broadcast messages intended for hired staff.  When they send to "all_users@domain.com", there is no way to EXCLUDE these temporary contractors.

Request / Suggestion:  Add a text-area in the alias for "excluded recipients" that is active if the "Include all domain users" switch is On.

Result:  By only listing a few exclusions for these temp/contracted workers, they get both benefits-- (1) an alias that requires NO regular add/deletes to send to all employees, and (2) an easy way to exclude a few non-employee recipients from broadcast messages.