Proton Mail: Encrypted Email

Proton AG

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

Trying to make the transition from Gmail. In this process I've discovered how important being able to apply formatting to the body of my email text is. This app does not permit it and it's driving me a bit crazy. It is otherwise pretty close to the Gmail app in terms of its other features as far as I can tell so far.

The latest update turned off app lock, I figured out how to reenable it, but in the meantime all my email was unprotected on my device. The list of emails uses a very large font and so it takes longer to scroll through them. And I wish I could go to the next email from within an email, instead I have to back out and then click on the next email. It's not efficient.

Protonmail just updated itself without my intervention. Right there, that's a problem! As if that wasn't bad enough, I can log into the app, but a pop-up immediately appears, and even after clicking next to the end, the app freezes on the last screen. Uninstalling, reinstalling did not fix the problem nor did rebooting the phone. THANK YOU SO MUCH PROTON!

What’s new

We’ve completely rebuilt the Proton Mail app to give you a faster, smoother, and more reliable experience.
- Faster performance: Emails open instantly, scrolling is fluid, and routine actions like archiving or replying are now faster too!
- Modern design: A refreshed interface with simpler navigation makes it easier to manage your inbox.
- Offline mode: Read, write, and organize emails even without internet. Everything syncs when you’re back online.
Update today to enjoy the new Proton Mail!