tmail_quota() for other folders?

Hello,

I've been using tmail_quota() in order to set a maximum size for the
INBOX with no problems.  Thank you for providing the hook Mark!  Now
where should I dive into and use a similar function if I want to set a
maximum size for other folders too?

If it simplifies things, having the same maximum size limit for every
folder (actually INBOX and three more named Sent, Drafts and Trash in
my case) is what I am trying to do.

Thank you in advance.