Invite-O-Matic is a small gnomish engineering tool to help with group / raid invites.
It has a customizable invite word (!invite), which will make anyone whispering you that word be invited to your group.
Also it supports 3rd party inviting, where someone whispers you the invite trigger followed by another players name, ie. "!invite Tkaa", which will make Invite-O-Matic try and invite the player named Tkaa, if this player does not exist, or is not online, it will instead try and invite whoever whispered the trigger.
You can also ask Invite-O-Matic to convert the current party to a raid by whispering the raid trigger (!raid). This is also customizable.
Invite triggering or raid conversion triggering can be enabled/disabled independently.
If a invites b, via "!invite b", player b will get a message telling him he was served the invite via InviteOMatic, and who asked for him to be invited.
Also if a invites b, via "!invite b", and b declines. Player a will get a message telling him that b declined "his" invite.
Both these messages are toggleable.
(And yes, this is a rewrite of the old Invite-O-Matic i made a long time ago, to handle groups in BG's. (Before blizzard enforced 1 big group))