I use a client, so have a local IMAP backup, and regularly back this up to my NAS.
That's not really my worry, though. What scares me about being heavily invested in blah@gmail.com or blah@notmydomain.com is lockout from services. As long as I have my own domain then I can just switch out the DNS and I'll still be able to get into whatever web service I signed up to using my email address.
That's not really my worry, though. What scares me about being heavily invested in blah@gmail.com or blah@notmydomain.com is lockout from services. As long as I have my own domain then I can just switch out the DNS and I'll still be able to get into whatever web service I signed up to using my email address.