Conversation mode was introduced with the release of version 3.0 of ProtonMail. It provided grouped messages from the same conversation together in one location in your inbox so they are easy to follow and respond to.
For those users who would rather not use conversation mode, we maintained version 2 on a different domain to allow its continued use.
ProtonMail has continued to work tirelessly to build the best email client possible. As we prepare to release many new and exciting features, we will need to retire version 2. We will be working towards this transition in the coming weeks. With this in mind, we have added the ability to disable conversation mode to version 3. We encourage anyone currently using version 2 to try this feature and all the other features available in version 3.
To turn off conversation groupings, see the Appearance section under your Settings.
Under the Conversation Grouping option, you now have the ability to easily turn conversation mode on or off.
With the retirement from version 2 to version 3 coming soon, we urge you to provide any feedback or concerns in advance so we can ensure they are addressed. You can do so in the comment section below or directly to our team through the contact form.