Looking for mail addon that lets me send more then 12 items

I use to have an addon for doing this, but it was years ago and i can't remember what it was called.

I would go through my bags and click on every item i wanted to send, the addon would add the items to a queue. When i hit send the addon would send all the items. Obviously each mail only contained 12 items.

I have to send a couple thousand items to a new AH alt and having to manually do it 12 at a time is tedious. I would just use TSM mailing, but for some reason the the groups the items are in are not showing up in the list