What is SimpleLogin used for?

SimpleLogin is an open-source email alias service that hides your real address behind aliases, with a back end and web app you can self-host. It is a good fit for reducing tracking by using unique aliases and running a private alias service for a domain.

Is SimpleLogin open source?

Yes. SimpleLogin is open source under the AGPL-3.0 licence. Its source code is on GitHub at simple-login/app and is written mainly in Python.

Yes. SimpleLogin is open source, so the software itself is free to use. A managed cloud version is also available, with paid plans from $4 per month.

Can I self-host SimpleLogin?

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

What is SimpleLogin an alternative to?

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

Is SimpleLogin actively maintained?

Yes. The most recent commit to SimpleLogin was on 2 October 2026, and the latest release is v4.82.4, published on 29 September 2026. The project has 7k stars on GitHub.

SimpleLogin: open-source alternative to ImprovMX

About SimpleLogin

SimpleLogin is an email alias service that protects your online identity. The idea is that your email address works as an identity, and using the same one everywhere makes it easy to track you, so you create a separate alias for each site and forward mail to your real inbox.

This repository contains the back end and web app, and its README is mainly a guide to self-hosting. You need a Linux server, with at least 2 GB of RAM recommended because most components run as Docker containers, open ports for email, web and SSH, and a domain whose DNS you can configure. Once your instance is running, you can point the SimpleLogin Chrome and Firefox extensions and the Android and iOS apps at your own server by changing the API URL.

SimpleLogin is written in Python with Flask and licensed under AGPL-3.0. The roadmap and forum are kept on GitHub, where users can submit ideas and vote on features. The vendor also operates a hosted service at simplelogin.io.

Key features

Email aliases that forward to your inbox
Self-hosting guide for Linux servers
Browser extensions for Chrome and Firefox
Android and iOS apps
Custom API URL for self-hosted instances

Good fit for

→Reducing tracking by using unique aliases
→Running a private alias service for a domain

Built with: Python; Flask
Tags: email-alias; privacy; email; self-hosted; flask; python; anti-tracking; forwarding

SimpleLogin: questions and answers

What is SimpleLogin used for?: SimpleLogin is an open-source email alias service that hides your real address behind aliases, with a back end and web app you can self-host. It is a good fit for reducing tracking by using unique aliases and running a private alias service for a domain.
Is SimpleLogin open source?: Yes. SimpleLogin is open source under the AGPL-3.0 licence. Its source code is on GitHub at simple-login/app and is written mainly in Python.
Is SimpleLogin free?: Yes. SimpleLogin is open source, so the software itself is free to use. A managed cloud version is also available, with paid plans from $4 per month.
Can I self-host SimpleLogin?: Yes. SimpleLogin can be self-hosted on your own server or infrastructure.
What is SimpleLogin an alternative to?: SimpleLogin is an open-source alternative to ImprovMX. Other open-source alternatives to ImprovMX include addy.io and Forward Email.
Is SimpleLogin actively maintained?: Yes. The most recent commit to SimpleLogin was on 2 October 2026, and the latest release is v4.82.4, published on 29 September 2026. The project has 7k stars on GitHub.