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

It's been over a year and 4.x remains almost unusable. Slide out menu is STILL broken, making navigation a nightmare and I constantly accidentally delete or archive things. I can't stress enough how much this breaks normal usage. Font size of UI elements remains mismatched as well. I've had to revert back to 3.x again, which thankfully still works.

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.

Pretty good so far, but there is one thing that the app REALLY should have. Got the paid account to be able to create multiple email addresses, but they all just lump into the same mailbox? Kind of defeats the purpose. Tried to manually accomplish with filter and folders, which is OK, but doesn't work with aliases that forward to each address. It's also a lot of extra work for something that seems like it should have an option to do automatically.

What’s new

- Toolbar actions in the Mailbox and Details screen can now be customized
- Additional Swipe Actions are now available
- Fixed an issue where free users with an additional @proton.me address were unable to change sender in Composer
- Fixed an issue where a conversation message sometimes wouldn’t get expanded when offline
- Minor fixes and improvements