Proton Mail: Encrypted Email

In-app purchases
95.5K reviews
Content rating
PEGI 3
10M+
Downloads
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About this app

Proton Mail is the encrypted email app trusted by over 100 million people. Get a secure, private email address protected by end-to-end encryption, with no ads, no AI training and no inbox scanning. Based in Switzerland and protected by some of the world's strictest privacy laws. Your inbox, your rules.

Why choose Proton Mail for secure email
✔ Free encrypted email: create a free @proton.me or @protonmail.com email address
✔ Password-protected emails: send encrypted emails to anyone, even people who don't use Proton
✔ Spam, phishing and tracker protection: with built-in spam filters, phishing alerts and email tracker blocking
✔ Organize your inbox: with folders, labels and simple swipe gestures
✔ Offline mode: read, write and organize emails offline, and everything syncs when you're back online
✔ Private categories: keep important emails in focus with automatic, private categories
✔ Multiple accounts: switch between multiple Proton Mail accounts in one secure email app
✔ Get up to 1 GB of free email storage, or up to 15 GB with Mail Plus

🔒 Secure email with encryption
Everything in your inbox is stored with zero-access and end-to-end encryption, emails between Proton users can only be read by you and your recipient. Proton Mail can't read or scan your messages. Our open-source apps use OpenPGP encryption and are independently audited.

🎭 A private alternative to temp mail
Need a temp mail address for a sign-up? Create up to 10 free hide-my-email aliases on the web. They forward to your inbox, keep your real email address private, and can be disabled or deleted at any time.

🔄 Switch to secure email
Easy Switch moves your email to your new secure inbox with no manual exporting or importing. Connect Gmail to use your Gmail address alongside your Proton email in one secure inbox, or set up auto-forwarding from as many Gmail accounts as you like.

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

💜 How can Proton Mail be free?
We believe everyone deserves private email. Free accounts are funded by our community of paid subscribers. Upgrade for more email storage, more addresses and custom domains.

Follow Proton for the latest news and offers:
Facebook: /proton
X: @protonprivacy
Reddit: /protonmail
Instagram: /protonprivacy

Learn more: https://proton.me/mail
Our open-source code: https://github.com/ProtonMail
Secure & private email app. Encrypted inbox, spam filter and email aliases.
Updated on
Oct 7, 2026

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

91.7K reviews
Valentin Dimitrov
June 28, 2026
The UI needs some improvements. A bar at the bottom containing shortcuts to the side pane folders/labels menu, emails, calendars and contacts would improve usability a lot. Contacts are still not editable in the app. The search button could be brought to the bottom for easier access. There is a filter for unread emails only on the top. How could additional filters be added/used (by folder or label for example without reapching for the side pane)?
3 people found this review helpful
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Proton AG
January 15, 2019
Thank you for the great review! We are working on new features and hope to introduce the fingerprint authentication soon.
Per Henriksen
July 9, 2025
I paid for a subscription a while back and only then discovered that you can't search for text in the body of your email. The only exception is through the web interface but then you'll have to download a copy of all your emails for each machine you want to search from. Basically close to useless if you rely on seach to find your emails. How hard can it be to make an encrypted index on the server side? The emails are already encrypted and accessible from any client. Their VPN is brilliant though
1 person found this review helpful
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Proton AG
July 10, 2025
Proton Mail can’t search email bodies on the server because all messages are end-to-end encrypted. Emails are encrypted on your device, so not even Proton can read them to create a searchable index without compromising your privacy.
Margot Maillot
September 7, 2022
Unfortunately I have to agree with the other users, the new update is AWFUL! When I click delete on a notification it doesn't delete the email from the inbox, the app "can't retrieve email" unless I click refresh a few times, it's very slow,... I had absolutely no issues with the previous version. This new update brings a terrible user experience. Checking my emails is a real hassle, it shouldn't be. Edit : The support (contacted via the app) was quick to respond and found a solution
34 people found this review helpful
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Proton AG
September 30, 2022
We apologize for the inconvenience. Please go to the app settings, clear the app cache and disable "Alternative routing". If the issue persists, please contact us: https://proton.me/support/contact. Edit: We're happy to hear the issue was resolved.

What’s new

Multiple fixes and performance improvements.