Maildir in Thunderbird?

NoOp glgxg at
Tue Apr 5 17:02:40 UTC 2016

On 3/8/2016 3:54 AM, Karl Auer wrote:
> Hullo Thunderbird users!
> This comparison page between Outlook and Thiunderbird says that
> Thunderbird can store emails in Maildir format (one file per message):
> bird_-_Microsoft_Outlook
> Is anyone out there actually doing this and can confirm it's possible?
> My own research suggests it's not. I would be overjoyed to find out it
> is possible; it's about the only thing stopping me moving to
> Thunderbird...
> Regards, K.

You might want to read through these:


Maildir in Thunderbird

Thunderbird 38 introduces optional Maildir which allows a single unique
filename per email (EML), unlike the default monolithic single file
format of one file per folder known as mbox. NOTE - this is NOT full
maildir in the sense that most users, particularly linux or mail
administrators, know maildir. You cannot point Thunderbird accounts to a
mail server directory, nor do you get message flags stored with emails.
See wiki for more details.

Maildir is disabled by default because there are still many bugs. It is
not 100% ready for users.


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