Alternatives to Firefox Relay

Email masking service from Mozilla that forwards aliases to your real inbox. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as Firefox Relay.

  • SimpleLogin

    Open-source email alias service that protects your real inbox from spam.

    FreemiumOpen sourceWeb

    SimpleLogin is open source and backed by Proton, with individually disabled aliases, but its best features and higher limits need a paid plan.

  • Addy.io

    Open-source email alias service that forwards anonymous addresses to your inbox.

    FreemiumOpen sourceWebSelf-hosted

    Addy.io offers unlimited free aliases, is open source and can be self-hosted, removing the free-tier mask limit and the Firefox ecosystem ties.

  • DuckDuckGo Email Protection

    A free email forwarding service that gives you a @duck.com address and removes trackers.

    FreeProprietaryWeb

    DuckDuckGo Email Protection is free, gives a @duck.com forwarding address and strips trackers from emails, but relies on DuckDuckGo to forward all mail.

  • Apple Hide My Email

    iCloud+ feature that generates disposable email aliases for sign-ups.

    PaidProprietarymacOSiOS

    Apple Hide My Email is built into iOS Settings, but requires a paid iCloud+ subscription and works only within the Apple ecosystem.

  • 33Mail

    Disposable email forwarder offering unlimited free aliases.

    FreeProprietaryWeb

    33Mail gives unlimited free aliases, though free aliases sit on its shared subdomain and the interface is dated compared with newer services.

  • Forward Email

    Open-source email forwarding service for custom domains.

    FreemiumOpen sourceWeb

    Forward Email is an open-source forwarder with unlimited aliases for custom domains, which needs your own domain and some DNS configuration.

  • Erine.email

    Free open-source anti-spam service for your existing email address.

    FreeOpen sourceWeb

    Erine.email is free and open source and works with an existing inbox, but it is smaller and less established than Mozilla's service.

  • Cloaked

    A privacy service that creates masked identities and scans for data brokers selling your personal information.

    FreemiumProprietaryAndroidiOSBrowser extension

    Cloaked adds masked phone numbers alongside masked emails, with iOS and Android apps, but it is closed source and focused on US users.

Also worth comparing

These listings name Firefox Relay as their own alternative, so the relationship runs both ways.

  • 10 Minute Mail

    Free temporary email address that stops receiving mail after ten minutes.

    FreeProprietaryWeb

    Firefox Relay creates lasting email masks from Mozilla that forward to your real inbox, with browser extension integration, though the free tier limits how many masks you get.

  • Guerrilla Mail

    Web service that gives you a disposable email address instantly, with no signup.

    FreemiumProprietaryWeb

    Firefox Relay creates private masks from Mozilla that forward to your real inbox, avoiding public inboxes, with a free tier that limits the number of masks.

Similar software

Related functionality, not a direct replacement.