[Dovecot] expire tool - individual user/folder?

[Andre Hübner]

Hello,

is the expire plugin usable to delete mails with different settings for each 
individual user?
If i view sample config at http://wiki.dovecot.org/Plugins/Expire it looks 
like expire-data are related to foldernames.
Is it possible to let each user "activate" the expire-plugin for different 
folders with different settings?

Thanks,
Andre