ProtonMail BETA v1.04 Release Notes

We are happy to announce the release of ProtonMail v1.04. As usual, please completely clear your browser cache to make sure you load the latest version of ProtonMail.

Bug Fixes

  • Forwarded attachment is now taken into the calculation of storage usage.
  • Improved the JS code of the compose editor, so it’s faster to adjust the window size as user types in the message.
  • Email header is now appropriately displayed.
  • Messages in outbox can be printed correctly now.
  • A few UI improvements.

New Features

  • Email notification is in place.
  • A first level of incoming and unencrypted outgoing spam filter is implemented.
  • Better support of multiple languages – more encodings are supported.
  • You can now mark a message as “Starred” in display message page.

Known Issues

  • Multiple attachments not properly supported
  • Older browser versions are not fully supported, please use the latest browser versions.
  • Mobile and Tablet not yet fully supported
  • Emails cannot be sent to Yahoo, this is a problem on the Yahoo end, we are working with them to resolve this.

About the Author

Proton Team

Proton was founded by scientists who met at CERN and had the idea that an internet where privacy is the default is essential to preserving freedom. Our team of developers, engineers, and designers from all over the world is working to provide you with secure ways to be in control of your online data.

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3 comments on “ProtonMail BETA v1.04 Release Notes

  • Hi. Thank you for allowing me to participate in the BETA for protonmail. I appreciate your drive to introduce this product to the market, and value the hosting of protonmail in Switzerland. Marvellous!

    Maybe you’ve received this feedback already – but just in case – will you please develop the means for protonmail to be used in desktop (thunderbird, outlook, etc) and mobile device (android, ios) clients?

    Would you also consider developing a calendar with the system, which could also be shared?

    I’m keen to hear when you’ll release paid plans to market, especially for business customers. I want my own customers to be using encrypted email services for their businesses – so I’m also keen for them.

    Looking forward to your response, and ongoing updates with protonmail.


  • Gents::: I found your offering scrounging for laser-based aiming devices for observatories so I know I’m in a good place. My heart skipped a beat when I finally realized what you were doing here and I applaud what you’re up to and am extremely pleased that you’re either part of or all in on the privacy of the data problem… Let me know how I can help.