Proton Mail: Encrypted Email

Proton AG

In-app purchases

About this app

Keep your conversations private. Proton Mail is encrypted email from Switzerland. Used by millions worldwide, our all-new email app protects your communications and has everything you need to easily manage your inbox.

The Wall Street Journal says:
“Proton Mail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient.”

With the all-new Proton Mail app, you can:
• Create a @proton.me or @protonmail.com email address
• Send and receive encrypted emails and attachments with ease
• Switch between multiple Proton Mail accounts
• Keep your inbox tidy and clean with folders, labels and simple swipe-gestures
• Receive new email notifications
• Send Password-protected Emails to anyone
• Enjoy your inbox in dark mode

Why use Proton Mail?
• Proton Mail is free — We believe everyone deserves privacy. Upgrade to a paid plan to get more done and support our mission.
• Easy to use — Our all-new app has been redesigned to make it easier to read, organize, and write your emails.
• Your inbox is yours — We don’t spy on your communications to show you targeted ads. Your inbox, your rules.
• Rigorous encryption — Your inbox is secured on all your devices. No one can read your emails but you. Proton is privacy, guaranteed by end-to-end and zero-access encryption.
• Unmatched protection — We offer strong phishing, spam, and spying/tracking protection.

Industry Leading Security Features
Messages are stored on Proton Mail servers using end-to-end encryption at all times and are transmitted securely between Proton servers and user devices. This largely eliminates the risk of message interception.

Zero Access to Your Email Content
Proton Mail's zero access architecture means that your data is encrypted in a way that makes it inaccessible to us. Data is encrypted on the client side using an encryption key that Proton does not have access to. This means we don't have the technical ability to decrypt your messages.

Open-Source Cryptography
Proton Mail's open-source software has been thoroughly vetted by security experts from around the world to ensure the highest levels of protection. Proton Mail only uses secure implementations of AES, RSA, along with OpenPGP, while all of the cryptographic libraries used are open source. By using open-source libraries, Proton Mail can guarantee that the encryption algorithms used do not have clandestinely built-in back doors.

Proton Mail in the press:

“Proton Mail is an email system which uses end-to-end encryption, making it impossible for outside parties to monitor.” Forbes

“A new email service being developed by a group from MIT that met at CERN promises to bring secure, encrypted email to the masses and keep sensitive information away from prying eyes.” Huffington Post

Follow Proton on social media for all the latest news and offers:
Facebook: /proton
Twitter: @protonprivacy
Reddit: /protonmail
Instagram: /protonprivacy

For more information, visit: https://proton.me/mail
Our open-source code base: https://github.com/ProtonMail

Ratings and reviews

so-so email app. It does what it does — send and receive emails. but I find it very annoying you cannot remove the signature it adds automatically without you having to pay per month for premium... I do not want to manually remove it every time I type emails... also, the app is inconsistent, and ends up archiving emails when I press "Delete" for reasons unbeknownst. There are also multiple bugs present...

Nothing works! There's been an update which seems to have wiped out the ability to use email. Before, I couldn't send an email or open attachments using mobile data, now with the "update" every email I read promptly goes to unread and the marker at the top says "0 unread"! Even deleting emails on the website doesn't clear them on the app.

Until the last few months I would have given 5*. I have emails I'm composing disappear, emails I've sent don't actually get sent or saved, the Android app is extremely slow. The browser app is also a lot slower than it used to be. I see hundreds of reviews saying the same and the reply is always "the developers are working on it". I need to know how long it will take. What is going on? As a paying customer I am now considering the huge effort of switching provider.

What’s new

Minor fixes and improvements