“ProtonMail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient.” Wall Street Journal

ProtonMail is the world’s largest encrypted email service with over 1 million users. The ProtonMail secure email app for iPhone and iPad brings easy-to-use email encryption to your mobile device by seamlessly integrating PGP end-to-end encryption. ProtonMail also provides a modern user interface with a full set of innovative features such as customizable swipe gestures and the ability to send expiring emails.

Since we were founded by CERN scientists in 2013, we have been joined by citizens from around the globe who have supported our mission to protect online privacy. Our mobile app was made possible by a record-breaking $550,000 donation campaign. With the ProtonMail app, you can now create your own free ProtonMail email account and start experiencing the secure email of the future.

Why use ProtonMail?

• Ensure your emails stay private and cannot be intercepted or disclosed to third parties
• End-to-end encryption, OpenPGP compatible
• Easy-to-use: encryption is done automatically and is completely invisible to the user
• Zero-access: all messages are stored in encrypted format—not even ProtonMail can read your messages
• Open source: ProtonMail's encryption is open to inspection by security experts from around the world
• Free: ProtonMail is 100% free, no catches.
• Swiss privacy and neutrality: ProtonMail is hosted entirely in Switzerland, under the protection of the world's strongest privacy laws

With the ProtonMail app, you can:

• Create a new email address with automatic PGP key creation and management
• Send and receive encrypted emails and attachments automatically
• Set timers for messages to self-destruct after sending
• Quickly organize emails with customizable swipe gestures and labels
• Get push notification of new emails
• Send password protected encrypted emails to non-ProtonMail email addresses

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 from MIT and CERN promises to bring secure, encrypted email to the masses and keep sensitive information away from prying eyes.” Huffington Post

What’s New

Version 1.11.9


***iOS 9 support will be dropped soon***

The app was unresponsive while "Sending message" was displayed
Some messages were not displayed properly
Sharing URLs from Safari and the Notes app displayed some errors
Some user settings updates did not show the 2FA modal and failed
Sending a message from the share menu did not display sending failed errors
Attachment limit size did not show in some cases
The app crashed when opening a large PDF attachment on some devices
Pasting an address in the To field did not work properly in some cases
PDF attachments with unicode name crashed the app
Some embedded images did load properly
Scrolling did not work properly after pasting content in the composer
Very long messages caused the composer to lag
Some messages with CSS and images did not resize properly
The text in the composer was shown behind the keyboard in some cases

Updated the log out icon on the PIN screen
Composer stability and usability improvements

New modal asking for confirmation when logging out from the PIN screen
Drag and drop for attachments in composer (iPad)
Missing VoiceOver integrations
Support for inline images in the composer

Ratings and Reviews

4.1 out of 5
130 Ratings

130 Ratings

DebbieDebsXoXo ,

I like the idea

This is a fancy concept, but the app still isn’t sophisticated enough and my user experience isn’t always smooth. I have a couple of annoyances, the first one being that I wasn’t able to copy an email address from the list of CC recipients. Number two: I hit “send” on an email and thought it had been sent only to see later that it was still in the drafts. The wifi signal is a lot weaker in the bedroom, so that might have caused the problem, but I think the app should at least notify you if something like this happens.

Ottleberg ,

Impressive but needs work

I am very happy with Protonmail in terms of security and things, and the app is definitely easy to use.

The only thing I would like to see is an option for push notifcations where you get a banner/alert but it doesn't display the actual content of the email (perhaps just the sender). This is something already implemented by many messaging apps, and considering how security and privacy is such a big part of the company's identity, it would seem like a very good idea.

It could just be that this is already an option and I simply haven't figured out how to do it yet, and if so I would greatly appreciate if you could instruct me on how to do so.

Crash Pad ,

Simple but easy to use.

The ProtonMail app is quite basic but I like that. It’s easy enough to use. I do notice a lot of received emails go into the spam folder and don’t flag up on the push notification which means I am likely not to see them straight away. I guess the app is being overly cautious? A minor quibble, it would be nice to customise the email alert tone as the default one sounds like everyone else’s phone/tablet. Seeings as you can’t use your phone/tablet default mail app with ProtonMail, this app works well enough and the simple layout stops it being too overly complex, imho.

Developer Response ,

Thank you for the feedback! Your support is greatly appreciated.


Proton Technologies AG
161.1 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Catalan, Croatian, Czech, Danish, Dutch, French, German, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kabyle, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish, Ukrainian

Age Rating
Rated 4+
© Proton Technologies AG
In-App Purchases
  1. ProtonMail Plus (1 year) £54.99


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