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New member
Status: In development

I'd like to be able to keep the thunderbird settings, layouts, etc in sync across multiple systems (and ideally, mobile).

New member

Another way to do this would be to use a normal cloud storage provider via rclone to sync the data in after it has been properly encrypted. The thunderbird profile would be encrypted with AES-256(Kalyna-512(Threefish-1204)) for truly unbreakable encryption which would be protected with a random password in the format of |(random word at least 6 letters in length)(random number 3 digits in length)(3 non repeating special characters)(3 non repeating emoji)(-) repeating 64 times. This recovery phrase would then be used to compute a SHA3 Shake256 hash 2048 bits in length, the first 1792 bits would be used as the encryption key in the order of AES-256(Kalyna-512(Threefish(1024)) and the last 256 bits would be used to calculate a SHA3-228 hash which would be stored inside the encrypted .thunderbird profile to as a verification check. To generate a secure recovery phrase the Fortuna (PRNG) algorithm would be used with the threefish-1024 block cipher running in counter mode. The seed would be generated by asking the user to mash their keyboard into a textbox until at least 24,000 characters have been mashed, but the upper limit would be 50,000 characters. While the user is mashing the keyboard to generate the seed, the text box would randomly  push shift for 1 second every 1-10 seconds and for every 1500 characters insert a SHA 512 hash of the last 256-2048 characters plus a 384 bit scrypt salt of a random file in the desktop, documents or download folder to protect attacks based on picking up keystrokes. Each file would be compressed with brotli compression and then compressed into one 7-zip archive for easy synchronization.

Making moves

i love this feature request.

Is it planned that Thunderbird email accounts will also be saved?
I think this idea would be great.

If there are security concerns, you could, for example, take over all account information, but optionally without passwords.

PC -> Laptop
Laptop -> PC
Laptop -> Smartphone
PC -> Smartphone

New member

Would love settings, rules, filtering sync'ing between devices, wanted for years.

Thank you Devs for all your hard work!

Strollin' around

@Jz68000this is not really do-able by the average user, but the idea is good.

Could I encourage you to contact the team and assist implementation of the Sync project?

Status changed to: In development
Thunderbird Team
Thunderbird Team

Update - to state the obvious this feature has been delayed and didn't make it for 115.  But there is a lot of great work being done to get it solid for production.  The party for Thunderbird sync is expected to happen later this year. 

Making moves


Like in subject, if i can make thunderbird synchronise my gmail setting and message filter using example one folder auto created on my gmail example [Thunderbird Cloud] folder who will be updated after new modification and uploaded to gmail. Then on another PC or Laptop Thunderbird can download and update file like Message fillters. Also synchronise plugins instaled on other pc. and no one need swap files manualy.
Even better if we can export setting like this to firefox account and synchronise firefox also update thunderbird.
Synchronise can update:

contact book list
message filter
Plugins added to thunderbird

New date  can be alweys updated then if you work on one PC and go to another (with same profil) all changes will be imported automaticly. : )

This not need be empty (look attachement) only one fille needed to swap. Can be downloaded from gmail, and restart app to load filters.

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.

Familiar face

I think this will be covered in the sync initiative that has been in progress for some time. At least that is what their blog posting says.

Making moves

Hi, i have hope this will be implemented. Then TB will be almost perfect for me. : ) for security reason store setting filters thunderbird on email is not that stupid idea. Becouse if you use seme profile on meny devices, all will be sync. And no one need manual swap file anymore.

Status changed to: Closed
Thunderbird Team
Thunderbird Team

This is planned as part of the effort described at  Please vote for that idea.

New member

Is there a roadmap fot this?

New member

yes, me too, really looking forward to this, got any updates, we can hang on?
thanks mozilla devs, been a fav for ever

New member

Will the sync contain list of running filters?

Will these filters then run also in the mobile version (when it will eventually get firefox sync too)?