Bug#1009181: File suffix for message mbox links should be .eml
On 10/04/2022 03:54, Don Armstrong wrote:
The only real difference between a single message in an mbox and a
complete mbox is From escaping.
I had an impression that MUA may decode messages from 7-bit transfer
encoding including quoted-printable and base64 fragments in headers
before saving .eml files. I rarely use .eml files, so I may be wrong,
and I do ask for such transformation from debbugs.
Frankly, using the extension to determine mime time is bad practice, but
it's a common bad practice.
In this particular case even libmagick is not a rescue, both
application/mbox and message/rfc866 are detected as text/plain. Though
my opinion is that thunderbird should have some option to make intention