[Dovecot] sieve or another vacation/autoreply

[Lampa]

Hello,

i'm trying to do some delivery notification for each incoming address.
Problem is that sieve vacation has :days but minimum value is 1 eg
period in which addresses
   are kept and are not responded to - but that is not that i want.

Is there other extension (in devel ???) or some other way (lda using
procmail or maildrop) how to implement my request ? (Before migration
we used qmail + procmail).

Thank you for your advices

-- 
Lampa