[Dovecot] Quota monitoring

Hello,

I would like to monitor users quotas in Dovecot but I don't find a way to do it for every user. Acutally I can log in with user & password to get the users quota but wat I need is a way to monitor the quota of every user with e.g an admin user which would have an acces to the quota of each mailbox. Is there a way to this?

Thanks for your help.