Ideas needed for archiving

[Piotr Pies Ostrowski]

On Tue, Dec 15, 2015 at 11:50:06AM +0000, Ben wrote:
> I've been asked by a user whether it's possible to stop their IMAP client
> downloading messages older than a given date.
> 
> Whilst I'm guessing it may well be possible to do this client-side using
> folders and subscriptions, it got me thinking .... is there a way to do this
> server side on dovecot ?  i.e. is there a way to "hide" messages from a user
> without having to archive them off into a seperate account ?

Sounds like virtual folders - create virtual folder with contains only
messages fullfiling criteria, maybe hide somehow original folder, let
user subscribe virtual folder.
http://wiki2.dovecot.org/Plugins/Virtual

Pies