Auto-retry/append send?

Hey...

I run into this issue a couple times a month...  Composing two or more
messages at the same time to send to different people related to the same
or similar topic.  When satisfied with the messages, I hit Send on each
one in quick succession. 

That results in the first message sent and the other one(s) dumped in the
Queue folder and a notification dialog.

Any reason the subsequent messages couldn't be retried automatically, or
added to a send queue behind the current in-transit one?  

Cheers,
Pierre