Are you hunting for the easiest and best means to delete your emails permanently from an iPad or an iPhone? Begin by opening Mail app and moving on to Edit. Move down to this list and around the bottom check if you can see the All Trash Option. Make sure this is ticked so that you can access it from your mailbox page. Now, select All Mailboxes or your single inbox before pressing Edit.
Press and hold your Move button using a finger before un-checking the email you had just checked. Once you leave holding onto the Move button, the email must be selected to for moving over to another location. Select move to Trash as an option.
Visit the All Trash folder or the Trash folder before choosing Edit followed by Delete All. Keep in mind that deleting emails will take ample time.
Wrap Up The Delete Game
Using the above steps to erase them all from the iPhone or iPad inbox is the easiest and most foolproof way. Keep repeating the process for any other folder/s you might want to clean up.