[koakuma-chan]

> Consensus appeared to be 'Get a custom domain (e.g. with Cloudflare) and use it with e.g. Fastmail'.

Huh, that's literally what I do!

> E.g. which email should I use with the registrar to buy the domain?

Not saying you should do this, but I use a fastmail masked email address as my Cloudflare email address.

> use it for password manager recovery etc

The cool thing about fastmail is that it has an integration with 1Password where, if you need to register at a website, you can quickly generate a masked email (e.g. [e-mail]) via the 1Password extension at the same time you generate the password. It's reaally nice.

[agent008t]

By 'fastmail masked', you mean an email on the fastmail domain, right? I.e. [e-mail]? So that if there is a problem with your domain, you can still login to your registrar even if they want to say verify your identity by sending a code to your registered email address?

[koakuma-chan]

Yes. Fastmail has a feature that allows you to generate masked email addresses, e.g. "[e-mail]" (also known as temporary email addresses). Emails sent to these addresses still arrive in your inbox, but you can easily block them any time. They are suitable for making accounts at garbage websites, so that you can block their spam any time. In fastmail though those email addresses are permanent (they won't disappear on their own after X minutes or anything like that).