What is addy.io used for?

addy.io provides anonymous email forwarding through aliases, with optional GPG encryption, and its source can be self-hosted. It is a good fit for signing up for websites without giving a real address, and reducing spam and tracking in your inbox.

Is addy.io open source?

Yes. addy.io is open source under the AGPL-3.0 licence. Its source code is on GitHub at anonaddy/anonaddy and is written mainly in PHP.

Yes. addy.io is open source, so the software itself is free to use. A managed cloud version is also available, with paid plans from $1 per month.

Can I self-host addy.io?

Yes. addy.io can be self-hosted on your own server or infrastructure.

What is addy.io an alternative to?

addy.io is an open-source alternative to ImprovMX. Other open-source alternatives to ImprovMX include SimpleLogin and Forward Email.

Is addy.io actively maintained?

Yes. The most recent commit to addy.io was on 2 September 2026, and the latest release is v1.7.2, published on 2 September 2026. The project has 4.9k stars on GitHub.

addy.io: open-source alternative to ImprovMX

About addy.io

addy.io, formerly AnonAddy, is an anonymous email forwarding service. You create aliases that forward to your real mailbox, which lets you give out different addresses without exposing your own. This repository is the source code for self-hosting addy.io, which is written in PHP and licensed under AGPL-3.0.

The project's FAQ lists shared domain aliases and standard aliases, the ability to use your own domain, replying to or sending from an alias so your real address stays hidden, and adding your own GPG or OpenPGP key to encrypt forwarded messages. It also covers attachments, spoof-warning banners, deleting an account and which mail providers are compatible. A browser extension, Android and iOS apps and a Raycast extension are mentioned.

The FAQ refers to Free accounts, which indicates a free tier on the hosted service, and it discusses where the server is located and what to do if you do not trust the operator, for which self-hosting is the answer. The project positions itself for people who want to limit spam and protect their identity when signing up to websites.

Key features

Shared-domain and standard aliases for forwarding
Custom domain support
GPG and OpenPGP encryption of forwarded mail
Reply and send from aliases
Browser extension and mobile apps
Self-hostable source code

Good fit for

→Signing up for websites without giving a real address
→Reducing spam and tracking in your inbox

Built with: PHP
Tags: email; email-aliases; privacy; pgp; email-forwarding; anonymity; self-hosted; php

addy.io: questions and answers

What is addy.io used for?: addy.io provides anonymous email forwarding through aliases, with optional GPG encryption, and its source can be self-hosted. It is a good fit for signing up for websites without giving a real address, and reducing spam and tracking in your inbox.
Is addy.io open source?: Yes. addy.io is open source under the AGPL-3.0 licence. Its source code is on GitHub at anonaddy/anonaddy and is written mainly in PHP.
Is addy.io free?: Yes. addy.io is open source, so the software itself is free to use. A managed cloud version is also available, with paid plans from $1 per month.
Can I self-host addy.io?: Yes. addy.io can be self-hosted on your own server or infrastructure.
What is addy.io an alternative to?: addy.io is an open-source alternative to ImprovMX. Other open-source alternatives to ImprovMX include SimpleLogin and Forward Email.
Is addy.io actively maintained?: Yes. The most recent commit to addy.io was on 2 September 2026, and the latest release is v1.7.2, published on 2 September 2026. The project has 4.9k stars on GitHub.