Newer iPhone 4 emails work for awhile then randomly stop. I've tried things like powering down the phone and turning it back on. Tested using normal cellular data plan and then just wi-fi. Same problem. The little wheel just continues going around but no update. View and searching the internet no problem. I also have an iPad in the same area and it works fine. While testing this afternoon, I was not able to send or receive. All of a sudden out of the blue I got the swishing sound that an email was sent about 20-30 minutes after the test email was sent.
I have read some suggestions to delete the account and re-add it. That does not seem applicable to this issue since the capability to send receive emails randomly comes and goes.
Using GoDaddy IMAP email with a private domain. All updates are current.