I have been with GoDaddy since 2007 with ~26 domains and 80 email addresses. They recently decided to stop doing POP & IMAP email with the CSR(s) telling me that 'your email is going to not work any longer because the industry has stopped accepting those old standards. You have to move to our Office 365 email or your mail will not work.' That BS wording rankled me to no end.

Given the difficulty of moving all of those domains and email, I hunkered down and started the pain of transferring the most entrenched domains to Office 365. Nothing but problems. The most recent problem is that I can not create SharedMailboxes in the admin.exchange.microsoft.com interface as they will not work on my client's Macs. GoDaddy's solution to this is to have my clients all move to an Outlook email client instead of their Apple Mail. Since that was not going to happen, they next suggested that I create the SharedMailbox from a standard email client license. That way the Mac users could log in to the account and just use them like normal email accounts instead of the SharedMailox feature that I was sold as being worth the transfer to the Office 365 email. (Yet another purchase of another email license.)

Another item that may help other Office 365 users was an error when a Mac client attempted to add an Office 365 email account to their Apple Mail program and got an error of 'You are already logged into that account.' as if the email address already existed in their Apple Mail. GoDaddy of course insisted that the user did already have that account entered and just did not see it. Then it was blamed on the 3rd party Apple Mail client and that the user should call Apple.

With all of that non-help to fix the Office 365 Exchange problem, I finally found a MS program 'Microsoft_Office_Reset_v1.9.1' that I ran which removed all of the Office history and then the user could add the Exchange account as needed.