Proton Mail: Encrypted Email

In-app purchases
4.4
62K reviews
5M+
Downloads
Content rating
Everyone
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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
Updated on
May 21, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Contacts and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.4
59.3K reviews
Nemesis 11FP
March 22, 2024
I used to love the app, but since the newest update (4.0.6) it's horrible. The font looks like notepad, when you reply to an email you have to scroll all the way to the top to see what you are typing, and with every reply it adds another Re to the subject line. The app is absolutely garbage now. I really hope they fix it soon or I HAVE to bail on it. Its basically unusable like this.
54 people found this review helpful
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Proton AG
April 11, 2024
Dear User, a new version that improves the scroll and font is available on the Play Store. Thank you for your feedback; it helps us improve.
Traveling Veggie
April 13, 2024
Update 2: so happy to hear the swipe navigation is in the works!! I'll try to send in screenshots of the deletion issue when I get a chance. I don't think I explained it well so here is my previous view rephrased: my main issue is when I search for a sender so I can delete some emails from that specific sender, after I select several and delete them, they dont go away. it still shows them along with the other emails from that sender. (If I wanted to search the trash id open the trash)
16 people found this review helpful
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Proton AG
April 12, 2024
Hi! The app schedules a deletion from our servers, so the messages disappear fully after each deletion task is performed. EDIT: We've added your vote to the existing request for supporting swipe-to-navigate in the app. Please provide us with a screenshot of what you see on your end when searching for senders at: https://proton.me/support/contact.
Nicholas Klingler
April 8, 2024
new app is really buggy, need to hit show remote content at least twice, then sometimes while reading the email it randomly makes me do it again, and unlike what it says below show remote content, there's no option in settings to show by default. Also the swipe actions are way too sensitive, I'll be scrolling through emails and accidentally delete one. Bring back the old app or make this one work correctly.
22 people found this review helpful
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Proton AG
April 9, 2024
Thank you for sharing your feedback with us, Nicholas! You can enable loading remote content by default by navigating to Settings → Account settings (your username) → Privacy → Auto show remote content/embedded images.

What's new

* Stability improvements related to message sending.