ProtonBlog(new window)

When Proton Mail 4.0 is released later this year, we will no longer support Internet Explorer (IE), including the newest version, IE 11. Anyone trying to access Proton Mail from IE after the update will be prompted to switch browsers. In this article, we explain the reasons for dropping IE as well as recommendations for alternative browsers.

Why Proton Mail no longer supports Internet Explorer

The decision to drop IE support comes after Microsoft (new window)announced it would no longer support older versions of the browser. Other services are phasing out IE for many of the same reasons we are. Considering the security risks, development costs, compatibility issues, and the small number of people using IE, we are confident this is the right time to drop IE support.

There are many reasons we will no longer support IE, including:

  • Almost none of our users run it. About 1% of Proton Mail traffic comes from IE.
  • We are not confident that IE 11 is a secure browser. Microsoft is diverting resources to focus on Edge, and fewer developers are testing for it. More bugs or vulnerabilities are inevitable.
  • We have an ambitious schedule of upcoming products and features(new window), including calendar and encrypted cloud storage. We would rather use our developer resources to improve Proton rather than fix bugs for an outdated browser.

It is likely that IE will still be around for some time. Microsoft has promised to continue supporting and updating IE 11 as long as it still supports Windows 10. That said, Microsoft’s own cybersecurity experts said(new window), “We’re not supporting new web standards for it and, while many sites work fine, developers by and large just aren’t testing for Internet Explorer these days.”

What to do if you use Internet Explorer

Proton Mail supports all modern browsers, such as Chrome, Firefox, Safari, and Edge. If you prefer to or you are required to continue using a Microsoft browser, you can use Edge(new window).

There are also many privacy-focused browsers, such as Firefox(new window) and Brave(new window).

If you have questions regarding this switch, please get in touch with our support team(new window).

Best Regards,
The Proton Mail Team

You can get a free secure email account(new window) from Proton Mail.

We also provide a free VPN service(new window) to protect your privacy.

Proton Mail and Proton VPN are funded by community contributions. If you would like to support our development efforts, you can upgrade to a paid plan. Thank you for your support.



Secure your emails, protect your privacy
Get Proton Mail free

Related articles

passwordless future
With the advent of passkeys, plenty of people are predicting the end of passwords. Is the future passwordless, though? Or is there room for both types of authentication to exist side-by-side?  At Proton, we are optimistic about passkeys and have int
At Proton, we have always been highly disciplined, focusing on how to best sustain our mission over time. This job is incredibly difficult. Everything we create always takes longer and is more complex than it would be if we did it without focusing on
is icloud keychain safe
If you’re on any Apple device, you’re familiar with the iCloud Keychain, the Apple password manager. It’s a handy tool that stores passwords for you and helps you manage your logins.  For a program that stores all your most sensitive data in one pla
We recently announced that Proton Pass now supports passkeys for everyone across all devices. Universal compatibility is a unique approach to implementing passkeys, unfortunately. Even though passkeys were developed by the FIDO Alliance and the Worl
How to upload and share private video
Your private videos are for your eyes only. However, not all cloud storage services are good at storing videos securely, let alone privately. In this article we explain what you can do to keep file sharing companies from having access to the videos y
Many email services, citing security reasons, require a phone number for identity verification. This creates an unfortunate paradox in which you must give up a highly sensitive piece of personal data to Big Tech. But there are simple ways to create
Can you password-protect a folder in Google Drive?
Protecting a folder with a password is a simple yet effective way of securing files. You may wonder whether you can password-protect a folder in Google Drive. We explain what access controls Google Drive offers and what you can do to improve your sec