Configuring iOS to delete messages when using IMAP

If you set up iOS to access an e-mail account using IMAP, you may receive the following error message when you try to delete an e-mail message:

Although the e-mail message does not appear in the iOS inbox, it is still on the mail server. (You can verify this yourself by checking the e-mail account in Webmail or another client application.)

To resolve this problem, follow these steps on the iOS device:

• On the home screen, tap Settings, and then tap Mail.
• Tap Accounts, and then tap the account that you want to modify:
  
  

3. Under IMAP, tap the account name:

4. At the bottom of the page, tap Advanced:

5. Under Mailbox Behaviors, tap Deleted Mailbox:

6. Under On the Server, confirm there is a check mark next to Trash. If there is not a check box next to Trash, tap Trash:

7. On the top menu bar, tap Advanced, tap Account, and then tap Done. Any messages that you delete on iOS are now also deleted on the mail server.