I have the same feature using 1Password and Fastmail. https://1password.com/fastmail/ Bonus is that I use a separate subdomain of my custom domain for disposable email addresses which means it never fails email checks (some don't like disposable/temporary email domains). - Source: Hacker News / 11 months ago

I have fastmail configured to accept *@{my name}.{my domain} and then I have a rule for each blocked sender. So it's it opposite of the logic that you want: I'll receive they mail until I explicitly block you. This is still not implicit block like you're after, but when I looked through the settings to see how I had it configured I discovered this integration with 1password: https://1password.com/fastmail/ which,... - Source: Hacker News / 12 months ago

Would you envision it working like 1Password's Fastmail integration? Source: about 1 year ago

Fastmail have good tools for this but 1Password together with Fastmail is unbeatable - https://1password.com/fastmail/. Source: over 1 year ago

To whoever is reading this: I am not doing IT for the Mafia. ;) To give some examples of how we do use 1Password, in terms of "Online Shopping" (just one of our shared vaults) that has 100's of credentials for everything from Amazon through Walmart and covering whatever we buy online from groceries to ammunition. Tons of more specialist or niche suppliers like Christmas Designers also make you 'Create Account' to... - Source: Hacker News / over 1 year ago

Https://lastmx.com/ protects your privacy with simple and secure mail aliases ; Simple. You do not have to change any setting on your side to receive or send messages. Source: almost 2 years ago