After updating my iPhone to version 2.2, I found out that deleting emails became a problem. After looking and looking, I found out what the problem was. There’s a new setting in the email settings that allows you to change the Trash folder to be either on the phone or on the server. Apparently, before the update, this was always on the server, but now it’s changed to be on the phone. Here’s how to fix it:

1. Access the Settings menu
2. Go to Mail, Contacts and Calendar settings
3. Open the email account you want to edit
4. Scroll down and click on Advanced
5. Under the Mailbox Behaviors, click on Deleted Mailbox
6. Change the setting from On My iPhone to On the Server

That’s it! You can also change the other mail folder options if needed.