On: Customer's 20-year-old email account shut down over unusual address

[uiri]

Running your own server is a lot harder today. You need to set up SPF and DKIM, at minimum. You also need to hope that you don't get erroneously blackholed by Google (GMail), Yahoo, or Microsoft (Hotmail/Outlook.com).

I would consider Gmail to fall underneath option A rather than option B. If Outlook Web is Microsoft's GSuite competition then it is not running your own server either.

[dredmorbius → uiri]

It's a bit of a wash, honestly.

You don't have to deal with Sendmail cf files, and there are secue options other than qmail.

Though yes, it's rather the PITA.