If MS Outlook started refusing to communicate with 163.com, would it be fair to say that email had banned 163.com? Would it be fair to say that email users had

If MS Outlook started refusing to communicate with 163.com, would it be fair to say that email had banned 163.com? Would it be fair to say that email users had to work around this block? I think it's an issue with MS Outlook, not with email. AFAIK, the two apps that blocked gab were Tusky and Toot!. This isn't like all email clients were doing this. The other thing is that local server admins blocked gab en masse. This is why you should find an instance that matches your requirements.