[Users] Missing Date: header emails, how to correctly list in date order

[Paul]

On Thu, 19 Sep 2019 14:14:03 +0100
Brian Morrison <bdm at fenrir.org.uk> wrote: 

> I continue to receive email from a source that doesn't include a Date:
> header at all, however something (probably Exim) adds in a
> Delivery-date: header during the smtp transaction.
> 
> How much effort would it take to find this header and copy it into the
> Date: part of the message header structure that Claws creates?
> 
> Could this be done entirely within procheader.c or is it going to be
> more complex?

Claws Mail has a long-standing tradition of not altering the raw content of
messages.

There is a script available, called fix_date.sh, which you could run manually
on messages with missing a Date header. It considers several headers for
date replacement, but not Delivery-date.
https://www.claws-mail.org/tools/claws-mail-fix_date.tar.gz

with regards

Paul