I hope that the domain name generated email address “catch-all” can add custom generated rules.

I hope that the domain name generated email address “catch-all” can add custom generated rules.
like GitHub - irazasyed/email-masker: Email Masker is an open-source browser extension that helps you generate and use masked email addresses for your online accounts.
chrome://extensions/?id=oedhkcdedcfloepkpacoocblokifkgjf

@Ted-Liang Welcome to the forum!

The currently available options for generating usernames are described in the help documentation. For “catch-all” addresses, the account name can either be the site domain name ([email protected]) or a random string ([email protected]).

I can move your post to the Feature Request section of the forum, if you wish for Bitwarden to extend the available options for generated catch-all email addresses.