It's a little oldskool, but it would be useful to send mails to multiple coords at once ingame. Predominately for team-up recalls.
I can imagine it may open the universe up to some form of mail trolls, so may need to be implemented with some restrictions e.g. limit of 10 coords.
As an alternative, an ability to send a recall mail for an attack similar to the recall mail for def.
Am I just being lazy here? Thoughts?