In such a case, when you delete a file, it permanently disappears instead of moving to the trash. Automatic deletion by a third party app or cleanup utility: In Mac, the trash could be set up to delete files automatically.
However, don't worry, since we will cover the steps to help you get it back ahead. In case you did not have a backup of the deleted emails, then getting that back could be trickier. In case something like this happens, then you could lose your important email data. That is not all though- there are many other scenarios where you can lose important emails: While the Trash may be helpful in such situations, not all deleted emails go there- and chances are, that you have permanently lost what can be an important email.
We have all done it a few times- deleted important emails while trying to get rid of the spam in our email inbox. How to Recover Deleted Email on Mac with Email Recovery Software