The best method to retrieve the deleted email is to check your "Trash" box within your email carrier. Most email providers keep your "trash" emails for a few days before completely discarding of them.
If it was pertinent information concerning your return, you can attempt to reach out to our live representatives for assistance. Here's how: https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"