Notes 
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.
Reviewed by Marco Wollank
SimpleLogin
simplelogin.io 4.5 (10)
Threat level
Covered
A covered pick. Anyone can use it as a private drop-in, with no setup or know-how. Enough for most people. Threat levels
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 AGPL-3.0 aliasesemailflaskhacktoberfestsimplelogin
Stars
7,112
+15 this week
Forks
666
48 watching
Last commit
today
healthy
Latest release
v4.83.3
today, 100+ total
Star history
Issues
61% closed
209
open
321
closed
+1 / -1
opened / closed, last 4 weeks
Opened vs closed, last 12 weeks
Commits, last 26 weeks
152 commits, active 24 of 26 weeks
62 contributors since Dec 2019
Languages
- Python 54%
- CSS 22.1%
- HTML 13.4%
- Other 10.5%
Updated daily from the GitHub API. Star tracking since Jun 15, 2026.
Website at a glance
simplelogin.io
B+ score 80
Solid website security headers
Graded by Mozilla HTTP Observatory, tested 4d ago
Inspect this site yourself
Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.
SimpleLogin alternatives
StartMail First choice for privacy email accounts. Users can choose between their web client or third party desktop clients like Thunderbird. Unlimited aliases with the StartMail and…
ProtonMail Free and paid plans include all security features, including end-to-end encryption, zero-access encryption, anti-phishing, anti-spam and 2FA. Own Android, iOS Apps and web…
Tuta Tuta: Free, Cross-Platform and Zero-Knowledge Calendar
Posteo German privacy email with no signup data, anonymous payment options, and green energy hosting.
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.
Disroot Free plans support custom domains. Users can choose between their web client or third party desktop clients like Thunderbird. Disroot allows for encrypted emails to be sent…
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.