- Sometimes it makes a mistake, and creates a POP account even if the ISP supports IMAP.
- Sometimes even if your ISP supports IMAP you really would prefer a POP account.
I had this issue just yesterday. The phone would auto select POP even though the server supported IMAP.
To get around this put in a fake email address when setting it up, ios6 will then try to autodiscover the account settings when it cant it will ask you to fill in the server details and you can select pop or imap as shown in the screen shot below