August 31, 2014 Update: Thank you for your support!! Our crowdfunding campaign
has succeeded, raising over $500,000! If you missed the campaign and would still
like to support Proton Mail, you can still do so here.
Click here to visit Proton Mail’s
UPDATE
First, we have gotten a new SSL certificate from SwissSign which is our
certificate authority (SwissSign is largely owned by the Swiss government). This
new certificate allows for wildcards so subdomains like proton.me no longer
throw invalid
We are happy to announce the release of Proton Mail v1.05. As usual, please
completely clear your browser cache to make sure you load the latest version of
Proton Mail.
Bug Fixes
* Login and password resetting system is improved.
* Security enhan
At Proton, security is our highest priority and something that we work on day
and night to improve. We have been very fortunate to have several individuals
and organizations step forward to assist us with security auditing. The
contributors listed be
UPDATE 5/23/2014 – It has come to our attention that at least for some users,
the problem was because they included @proton.me when trying to login. The
username should be ‘username’ not ‘username@proton.me’. If this is indeed the
cause of your login
Proton Mail is designed to guard against a broad range of threats. But there is
no such thing as perfect security. This threat model describes the threats
Proton Mail can and cannot counter.
Updated Nov. 18, 2019, to remove reference to an outdated
No matter where you live in the world, whether you’re living under an
authoritarian government or looking to break away from Big Tech surveillance,
using Proton puts your data under the protection of Swiss privacy laws. We are
often asked why Proton
Since Proton Mail beta was launched 3 days ago, we have been met with a
overwhelming response from around the world. In fact, the response was a little
too overwhelming as we have completely maxed out our server capacity. As a
result, we are sad to a
To further protect the Proton Community, Proton Mail utilizes only high-strength
ciphers for SSL and TLS.
We are posting our ciphersuite configurations for Postfix and Apache here for
reference, we recommend all system administrators adopt these set
January 12th 2015 update:
As part of the version 1.12 deploy, we have improved our notification system.
You can now toggle notification on or off in the settings page while keeping
the outside email for password recovery purposes. If you have new
UDPATE 5/19/2014: Due to very high demand, we have had to temporarily halt new
user signups as we increase server capacity and security. For more information,
click here.
The long wait and anticipation is finally over! Today, we’re happy to announce
