Is it possible to recover email that has been clicked "delete forever" in trash folder ? I have accidentally click delete forever an email but i just know that i actually need it
I am sorry to say so, but it is not possible to do so from within GMail or Google.
Anyhow, if the email was downloaded through IMAP into Mozilla Thunder-bird, Microsoft Outlook or any such software, and has not been synced after the deletion, they can be restored.
Unfortunately, there isn't an easy way to recover deleted email once you've done it forever.
The other answer on here is right - if you used another tool it might be possible.
Another option that might work (but is less likely), is to fill out a report of missing messages for the Gmail team to process: https://support.google.com/mail/bin/bin/request.py?&ctx=bugflow_receive31&contact_type=bugs
Gmail's help article says:
But you could use that bug request tool to describe directly to the team which email message(s) you need to recover and they might be able to help. Since this is meant for accounts that have been compromised, it might not work, but it's worth a shot.
Good luck :)