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ProtonMail - Encrypted Email

End-to-end PGP encryption from your iPhone

This app provides you with full encryption, end-to-end, straight from your iPhone or iPad

ProtonMail - Encrypted Email

by Proton AG
The ProtonMail main interface
ProtonMail - Encrypted Email
ProtonMail - Encrypted Email
FREE in the App Store

This app provides you with full encryption, end-to-end, straight from your iPhone or iPad. You can send and receive encrypted emails, set expiration timers, and rest assured that your privacy and security are assured.

The ProtonMail main interface. ProtonMail has a very clean, simple interface. Reading and composing emails is simple and easy, and the view is spacious and easy to use. HTML is supported within the emails, so you can easily click on links and see rich text treatment of the message.

The ProtonMail main interface
Rich text support

Rich text support. By selecting a word or passage, you can easily apply rich text effects to your email. You can bold words, italicize them, or underline them. ProtonMail also supports attaching files, so you can take a photograph to send or include one from your Photo Library.

Self-destructing emails. Within the app, you can decrypt your message quickly and easily for pure end-to-end encryption. Since messages are sent from ProtonMail's own servers in Switzerland, and they don't store your keys, your security and privacy is assured. You can also set an expiration timer for a self-destructing email.

Self-destructing emails
Viewable even from other apps

Viewable even from other apps. If your recipient doesn't have ProtonMail, they can still take advantage of the encryption of your message. All they have to do is tap on the button to decrypt the email, and they are taken to the ProtonMail website to view it. They do have to know the password, of course.

What is it about?

ProtonMail provides you with a streamlined email client for sending and receiving encrypted emails. Your emails are sent using ProtonMail's servers in Switzerland, not passed through the cloud, so everything is encrypted from the time you send it to the moment your recipient opens the email. The app even supports basic rich text, so you can apply formatting to your emails to highlight words or passages.

For those who...

  • Need security in their email
  • Like the idea of self-destructing messages

Not for those who...

  • Don't want their emails to be secure
  • Want to use an existing email address

Why we love it

ProtonMail is easy to use, and very efficient. It allows you to set timers for your emails to expire, after which they automatically delete from the recipient's inbox. The app is clean and streamlined, with all of the features you would expect from an email client, plus the end-to-end encryption of your messages.

App Screenshots

ProtonMail - Encrypted Email screenshot-0
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App Details

Productivity Business
Last updated
May 9, 2022
Release date
March 9, 2016
More info
ProtonMail siri commands

ProtonMail supports Siri commands

Wipe Main Key
Wipe Main Key

App Store Description

Keep your conversations private. ProtonMail 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:
“ProtonMail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient.”

With the all-new ProtonMail app, you can:
• Create a email address
• Send and receive encrypted emails and attachments with ease
• Switch between multiple ProtonMail accounts
• Easily manage your email with conversations
• 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 ProtonMail?
• ProtonMail 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 entire 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 for all your communications.

Industry Leading Security Features
Messages are stored on ProtonMail 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
ProtonMail'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
ProtonMail's open-source software has been thoroughly vetted by security experts from around the world to ensure the highest levels of protection. ProtonMail 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, ProtonMail can guarantee that the encryption algorithms used do not have clandestinely built-in back doors.

ProtonMail in the press:
“ProtonMail is a Gmail-like 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 who met at MIT and CERN promises to bring secure, encrypted email to the masses and keep sensitive information away from prying eyes.” Huffington Post

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

For more information, visit:
Our open-source code base:

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