How do I recover deleted AOL emails on my iPhone?

Open the trash folder.

Yes Mr Finch is onto something. If you open your trash folder in Mail, you should be able to select all the emails that you had deleted and recover them from the trash. There is a period of time normally from when you put something in the trashcan till when it’s actually deleted permanently. Usually this is 30 days it can be changed in preferences, but I believe the standard is 30 days, so look in your trash folder and see if the emails are in there if they are not for whatever reason and I have been deleted you have the option to restore from a back up. If you have back up, turned on in your iCloud settings back to us and let us know if they’re in the trash folder and are able to be restored.

Are you backed up to iCloud??