Here are some steps you can take to recover deleted emails from a trash folder:

1. Check the trash folder for deleted files. If you haven’t emptied your trash folder, the deleted email may still be present.
2. Use a third-party recovery software to search for deleted emails. Make sure the software is compatible with your webmail provider.
3. Contact customer support of your webmail provider to see if they can recover your deleted emails. If they can’t, they may be able to direct you to the best recovery software.
4. Check your email activity log. It may have a record of the deleted emails, and can help you figure out which emails were lost.