mail needs sent items

I was playing around with the ability to send mail to other players and noticed a lack of functionality. Sending mail to another player works wonderfully, however, currently there is no means to check mail that was sent and/or received by a recipient.

We need to be able to track sent items and possibly an option to "recall" a message prior to it being collected in case we send an item to the wrong person.

Another function that is beneficial would be "delivery receipts" .

Also, the inbox limit is low Some days, I have great sales

-jack