Emails are forwarded to your real email address. If you reply to a sender it will use your alias, too. It is designed to be user friendly and available on many platforms. Based in France.
Official website simplelogin.io
Our take
An alias forwarder rather than a mailbox, SimpleLogin lets you hand out a different address to every site and keep your real inbox hidden, and replies still go out from the alias so nobody learns your true address. It is now owned by Proton, which is reassurance or concentration risk depending on how you feel about putting more eggs in one basket. Reach for it as a layer on top of whatever email you already use, not as a replacement for it.
GitHub at a glance
simple-login/app
Stars
6,740
+ 22 this week
Last commit
1d ago
healthy
License
AGPL-3.0
Latest release
v4.81.4
1d ago
Stars, last 10d
Listed in
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addy.io addy.io is an open-source email aliasing service that lets you create unlimited aliases forwarding to your real inbox. Available on web, browser extensions for all major browsers, and Android/iOS apps. Self-hostable. Based in the United Kingdom.
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SimpleLogin license, in plain English
AGPL-3.0 Strong copyleft · network
Free to use, even commercially. Changes must be published under the same license, and running a modified version as a network service counts as distributing it.
Permits
- Commercial use
- Modification
- Distribution
- Patent use
- Private use
Requires
- Disclose source
- Network use is distribution
- Same license
- State changes
- License and copyright notice
Does not provide
- Liability cover
- Warranty
Why it matters: The network clause is the point. Anyone who runs a modified version as a hosted service has to publish those changes, so the code handling your data stays inspectable. This is why privacy-first projects reach for AGPL.
Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.