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New member
Status: In development

At the moment, #Thunderbird does not have true threaded conversations but more a simplistic form of threading where it only takes received emails and groups them together. Thunderbird needs true threaded conversations (which includes your own sent emails) built-in by default. Conversations is a feature that is available by default in most modern email clients like GMail, Outlook, and more so the lack of this feature in Thunderbird really stands out as missing something critical.

Here is an addon that tries to compensate for Thunderbird not having this feature but this has issues of its own.

Thunderbird used to be the go to email client for recommending but now it is far behind in modern features. I think this is one of those features that Thunderbird needs to compete in the current modern email client space.

Link to a bug report I made on this subject over 2 years ago:

Status changed to: New idea
Community Manager
Community Manager

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

Strollin' around

this would be amazing!!

New member

Lack of true conversation threads is the biggest complaint I hear about Thunderbird. All my friends and family are used to Gmail's interface thanks to decades of dominance by Google. Now when I try to get them off Google with an alternate email host and Thunderbird they find reading and managing threads frustrating and confusing.

Making moves

Would this also solve the issue where a reply with a new subject is grouped in the same thread as the message replied to? Or would that be a different idea?

Familiar face

@Toolworker, completely different


Strollin' around

As helpful as the Thunderbird Conversations add-on is, having a native threaded conversation view in Thunderbird would make for a much better user experience. A threaded conversation view is table stakes for any email client in 2023, having been the default view used by most of the major desktop, mobile, and webmail clients for the past decade. I would like to see Thunderbird adopt a threaded conversation view by default, but retain the option to disable this view for anyone who would like to opt out.

New member

Agree with this 100%. The default thread behavior is unlike any other email application, and breaks the thread mental model. Thunderbird needs to pull in and support full threads by default in a fresh install, especially if they are enabled by default.

Status changed to: In development
Thunderbird Team
Thunderbird Team

Work is in progress. However there is still a long road ahead.

Strollin' around

Connected here just to upvote and boost this issue.

I have recently switched to Thunderbird, because of the promising "Supernova" release, and my biggest pain point is the lack of a proper conversation view. It is super frustrating, and IMO, even makes the software unusable for daily email conversations. The nesting feature in the email list is also very confusing.

Other than that, thank you to all contributors for their work!