[MlMt] defer mail workflow in mailmate?

[Max Rydahl Andersen]

> On 05 Dec 2014, at 15:18, Benny Kjær Nielsen <mailinglist at freron.com> wrote:
> 
> The 1 minute is measured from the arrival of the message.

This is the problem I had when trying to do it. 

Makes it hard to do relative calculations. 

Could mailmate set/mutate a custom header ?

Like:
X-Defer-Until: timestamp

And the. Be able to use that as the comparison ?