Hi I deleted my mail by mistake yesterday (all of it )is there a way I can get it back?

What type of email account do you have, POP or IMAP? Did you select the individual mail and then delete them, or did you delete the account from the iPhone? If you log into your mail account in a web browser, is the mail in the Trash folder? If so, drag it back to the inbox.

Your emails should still be in the Trash folder under the account from which you deleted them.

1. From All Inboxes (if this is your default email view), tap "< Mailboxes" at the top
2. Tap the account from which the emails where deleted (you can repeat this for all accounts)
3. Tap Trash
4. Long-press a trashed email and tap Move Message