Resubmission after N days

[Thomas Güttler]

Am 05.02.2015 um 12:18 schrieb Steffen Kaiser:
> On Thu, 5 Feb 2015, Thomas Güttler wrote:
>>> What specific action shall be done via IMAP? The move?
>>> Then use any IMAP client library, use the LIST command to get the mailboxes, FETCH to get the messages and COPY/EXPUNGE
>>> to move them.
> 
>> You are right moving the mail should be simple.
> 
>> I ask myself it is possible to store the date of the resubmission in the mail itself.
> 
> How shall the date be visible to the user?
> 
> Remember that altering the message may invalidate DKIM and other security / verification stuff.
> 
> Instead of a simple "mv" you can prefix the message with "X-Date: " header, so you mark the message, but it is not visible to the user.
> 
> If your goal is to have the message "up" according the client side message sorting by date, you would need to alter the Date: header and possibly break message verification.
> 
> What's your goal in order to " store the date of the resubmission "?


My goal is to use IMAP only, not external database. But I guess this is not possible.

I could alter the subject of the mail. What kind of message verification could break? 

Regards,
  Thomas Güttler

-- 
http://www.thomas-guettler.de/