Hi, I deleted an important e-mail from gmail about 2 years ago and I also deleted it from the trash. Is there any way to get it back?
This what i found on google support If you've deleted a message permanently, by clicking Delete Forever in your Spam or Trash, you won’t be able to recover the message using the Gmail interface. https://support.google.com/mail/answer/78353?hl=en maybe you can contact their staff and they will help you to recover your mail but i think they will ask you for identity docs like driving licence passport etc Good Luck
I'm not sure about this, but maybe sharing my idea will help If you were using a Third Party Email Client and generated a backup, maybe you can restore your emails from a previous backup.