There have been a few apps over the years that allow you to restore Email, Contacts, Tasks, Memos, & Events that you have deleted since the app was installed. The latest is a free one aptly called Recycle Bin which stores backup copies of deleted Email, Contacts, Tasks, Memos, & Events so that you can later recover them. You can then clean out your Recycle Bin every once in awhile. The only catch is that emails are restored as drafts due to a technical limitation but other than that it works like a charm
