AH MailCollect 

When you open your mailbox AH_MailCollect will scan through and automatically retreive any mail that has cash from a successful auction, from being outbid, or from an auction you bid on that was cancelled. You can also choose to see each amount as it's looted, or only a summary at the end.

You can also automatically retrieve all items in emails from winning or expired auctions. If you don't want to do this automatically you can turn that option off, and instead you can right-click on an email and it will automatically take that item to your inventory, and delete the message. It will only delete auction messages, if someone sends you an item in the mail it will take the item, but leave the message. I don't like the idea of automatically deleting messages that may have other text in them.

Required Dependancies: Ace

History
1.0 - Updated mail checking logic to not stop collecting after one or two items. Should work better with addons like BeanCounter.

0.9 - Fixed new nil value error on standby introduced by last version. Fixed issue preventing collection of C.O.D. items.

0.8 - Fixed error with 'cash' variable after coming out of standby. Updated to current AceHooks calling convention.
0.7.1 - Fixed case where turning off auctionitem collection would not always take effect and improved collecting items reliably in high lag situations.
0.7 - First version with automatic item collection.