Proton Mail v3.10 Release Notes

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Proton’s secure business email(new window) plans have been updated(new window), so the following information is no longer accurate. Please contact the Proton for Business team(new window) if you have any questions.

Proton Mail v3.10 brings a brand new paid plan to Proton Mail. The new. Professional Plan is a major step forward for Proton Mail, by introducing for the first time, support for small and medium sized businesses that want to use Proton Mail.

As we mentioned in our last release notes article, we expect in these coming months to increase the speed of new Proton Mail releases as we work towards making Proton Mail the best secure alternative to traditional email services like Gmail and Outlook.

Proton Mail does not show advertisements or abuse your privacy to make money. Paid accounts are our only source of funding. Please consider upgrading to a Proton Mail paid account so that we can continue to operate the service and fund further development.

Proton Mail Professional Plan

Proton Mail can now provide secure hosted email for organizations with up to 50 users. Professional Plans mark the first step towards making end-to-end encrypted email available for businesses.

Proton Mail Professional allows organizations and individuals to set up organization administrators, add their own domains, and create individual user accounts for employees. Professional plan also brings with it an entire suite of management tools which allow organization admins to manage the accounts of sub-users, such as allocating available storage space among users.

To learn more about how to use Proton Mail Professional for your organization, you can visit our getting started guide here.

For more information about Proton Mail for Organizations, we have written a more in-depth article about the capabilities that Proton Mail Professional brings.

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Catch-all email

Proton Mail now supports catch-all email for Proton Mail Professional and Visionary plans. That means for each domain that has email hosted at Proton Mail, you can now designate one email address as the catch-all address by going to Settings –> Domains.

For example, could receive any email sent to the domain, even if the address did not exist. You can learn more about catch-all emails here(new window).


With this new feature, users can now set an auto-reply to incoming messages that can be personalized. This way, if you are on vacation or out of the office, you can automatically let customers know that you are gone. This feature is available for Proton Mail Plus, Professional, and Visionary users.

Find out more about how to set-up you auto-reply in this article(new window).

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Top-Up Credits

Now it is possible to buy Proton Mail credits in advance if you would prefer not to use our reoccurring billing system. In Settings -> Dashboard, you will find a button to ‘Add Credits’. After you buy credits, when your Proton Mail or Proton VPN invoice is due, it will automatically deduct from the available credits. Credits can be added with Credit Card or PayPal.

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Custom filters with Sieve

The Proton Mail default filter options are useful for basic tasks and very easy to implement to help users keep a well organized inbox. Custom filters with Sieve is the advanced version of filtering, allowing nearly infinite personalization capabilities.

This type of advance filtering is a global standard following the Sieve programming language. Learn from this article how to set up your own sophisticated filtering system with Sieve. This is definitely a feature for power users, but it makes Proton Mail filters infinitely powerful. Filters are available to Proton Mail Plus, Professional, and Visionary users.

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Version 3.10 Full Release Notes

New Features

  • Proton Mail Professional Plan with multi-user support
  • Catch-All Feature
  • Proton Mail Auto Responder
  • Custom Filters with Sieve


  • Credits Top Up Feature
  • PayPal is now allowed for Monthly payments (for amounts exceeding 50 euros/month)
  • Faster message sending

Bug fixes

  • Resolved an issue with attachments in Safari that impacted a small number of users.

As always, your feedback is very much appreciated. Please report bugs using Proton Mail report bug feature, or send us a support request here:

Secure your emails, protect your privacy
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Irina Marcopol

Irina is one of Proton's longest-serving team members, charged with strengthening and growing our brand and the Proton community. With a background in visual design, events management, and digital marketing, she strongly supports the protection of private data and contributes to building a better internet for generations to come.

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