it works similar, yes.

I just wanted to note that fediverse could be even more useful if it had the portability built in.

ps: for mobile it’s called MNP : https://en.wikipedia.org/wiki/Mobile_number_portability

right, I forgot to mention this option. Indeed a possibility

it requies some technical knowledge and is not something many people do, probably less than 1%

compare that to phone number portability is available automatically to everyone (perhaps dependent on juristriction)

What I meant is: you cannot switch a specific email from one provider to another. Only option is for you to change your email address.

Compare that to say mobile phone numbers: there you have the option to keep your number when switching providers.

Portability of email is what’s missing.

edit: typo

at the host level yes, but not at the user level