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I was giving this some thought and my initial reaction was to suggest a Gmail account with +aliases, e.g. mythrowaway@gmail.com, and then use mythrowaway+whatev

I was giving this some thought and my initial reaction was to suggest a Gmail account with +aliases, e.g. mythrowaway@gmail.com, and then use mythrowaway+whateveralias@gmail.com combined with a forwarding filter. I then saw the 'own domain' requirement leading me to think Google Apps will let you do this (for money), and you could use a catch-all alias rather than having to use +subaddressing. That said, if you want to use your own domain and host it yourself, you could easily do this on something as small as a Raspberry Pi with exim/postfix, and just update /etc/aliases as required. example /etc/aliases file: throwaway1: realaddyaliassecret throwaway2: realaddyaliassecret throwaway3: realaddyaliassecret throwaway4: realaddyaliassecret realaddyaliassecret: myrealaddress@yahoo.com Note that you don't need to use a 'realaddyaliassecret', it just makes life a bit easier than having to always type in your real email address. And when you're done with a throwaway, just remove the entry from your aliases file, and messages should now bounce. Shouldn't be particularly difficult to build a nicer front end too, cli or webbased. EDIT: all of this now has me wondering why I haven't done this for myself already, given how simple it is. Thanks for the idea!

jonahx 11y ago
The problem with gmail + emails is that it's well-known those are aliases, and anywhere you signup can just strip the "+xxx" part to get your permanent address.
- oarsinsync 11y ago
  Sorry, I may not have been sufficiently clear, you'd register a new throwaway gmail address, and then create forwarding filters based on throwaway+alias. At that point, it doesn't matter if $badsite strips the +alias and learns your email is throwaway@gmail, you're not forwarding mail sent to that address anyway. Anyway, I'm probably going to register a throwaway domain to use for disposable email per my final suggestion, so thanks for the post!
  - jonahx 11y ago
    I see. Yeah, that would work. Although the process of setting up the forwarding wouldn't be just inconvenient enough that I wouldn't use it most of the time, I think.

jonahx 11y ago

The problem with gmail + emails is that it's well-known those are aliases, and anywhere you signup can just strip the "+xxx" part to get your permanent address.

oarsinsync 11y ago
Sorry, I may not have been sufficiently clear, you'd register a new throwaway gmail address, and then create forwarding filters based on throwaway+alias. At that point, it doesn't matter if $badsite strips the +alias and learns your email is throwaway@gmail, you're not forwarding mail sent to that address anyway. Anyway, I'm probably going to register a throwaway domain to use for disposable email per my final suggestion, so thanks for the post!
- jonahx 11y ago
  I see. Yeah, that would work. Although the process of setting up the forwarding wouldn't be just inconvenient enough that I wouldn't use it most of the time, I think.