Sieve RFC5490 checks user quota usage

Hello.
I am trying to figure out if sieve, with RFC5490 support, is able to read
user's disk quota (used) and act accordingly.
 
I would like to trigger a mail to "self" if quota is above a given percent.
Something like a vacation message (so once a day or so), triggered on
arrival AND if quota is above X %.
 
If sieve doesn't support this, is there another way to do it?
 
Thanks and have a nice weekend,
Paolo

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