Acme/Mail displays the date from the last Received: header, which 
can be considerably different from the date when the message was 
first sent.  The format of the acme/mail date is by its nature 
local time, which is helpful.

This is a stab at displaying a more useful date, as in my particular 
case messages are batched together and the date of delivery conveys 
a false impression.  I have not felt a need to convert the date to 
localtime, although no doubt that would appeal to many users.  It 
is also not a trivial operation, of course, what with all the 
formats in use.

I'm submitting this more for discussion than for actual incorporation, 
although it would be nice not to have to treat this module as a 
special case on replication.

Lucio De Re.