[ilyt]

How JMAP made that better ?

Last time we did something like that new email address was just "add entry to a Dovecot database", fully protocol agnostic

[calvinmorrison]

because the masked email API matches the rest of the JMAP API, so it's easy to extend and support. Also, 1Password isn't running Dovecot, Fastmail is. So they're asking a 3rd party is a fairly standards conformant way to go and create a new email alias