That switch from their own webmail solution to Microsoft a year or two ago was the final straw for me and the single domain I still had with GoDaddy. If I had wanted to use MS email I would have been using it already. Transferred to Gandi.net and while the webmail isn't as featureful (Roundcube) at least it's cheaper.
However, their recent switch to MS Office 365 / Outlook for email has been a fiasco, and pushed me one step closer to dropping them.