an email account was accidentally deleted
is there any option to recover that data (messages)?
and when I go to tab "create new email address" will appear to have as a suggestion to create the same email that was deleted
If you're lucky, Support can restore it for you. Submit a ticket ASAP.
In the future, either use IMAP so mail gets saved locally on your computer, or also add a forwarder to your Fully Hosted Email to a Gmail account.