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Open-source email forwarding and aliases

3 email forwarding and aliases whose code is public under an OSI-approved license, rated for privacy with evidence. Picks first, then by score.

  1. Addy Grade D

    Open-source email alias service that forwards mail from unlimited aliases to real mailboxes, with optional OpenPGP encryption. Has a free plan and can be self-hosted.

    AGPL-3.0. Source code

  2. SimpleLogin Grade D

    Open-source email alias service run by Proton. Creates aliases that forward to real mailboxes and lets replies go out from the alias. Can also be self-hosted.

    AGPL-3.0. Source code

  3. Firefox Private Relay Grade F

    Email masking service from Mozilla that creates aliases and forwards mail to a real inbox. Works on the web and through a Firefox add-on.

    MPL-2.0. Source code

Compare all 9 email forwarding and aliases, open source or not.