alt Hacker News> Going and updating my accounts with a new address was easier than I was expecting
Is this really true? Out of the probably many hundreds of online accounts I use I can think of very few that actually let you change the underlying email (which in almost ever case is the username) without having to create a brand new account.
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Can you cite an example of a big, well-known, etc service that enforces a 'you can't change your email address' rule? I haven't really seen this sort of thing in the wild to be honest. Maybe one or two over 20+ years? I think the norm is using a username or an internal identification number (such as an UUID). It is rare the email address is actually used as the primary key to identify an account.
The majority of mine are changeable, but the process is typically convoluted. The two that I have run into so far that I can't change are OpenRouter and Ecobee.
When I made the switch from @Gmail to my own email domains hosted by Fastmail, I never had any problem changing the email on my 100+ accounts with various services.
That was about five years ago, I imagine it might have been more difficult in the past, say 10+ years ago.
I didn't keep exact numbers, but of the ~400 Hide My Email aliases I have, probably 85% of them allowed changing email in the online self-serve, 10% required contacting customer support, and maybe 5% needed a new account.