[Dovecot] Get the size of a maildir

Hello.

I would like to know it a 'proper' solution exist to get the size (in MB) of a maildir. Actually, to get it, I do a 'du -sh' but I'm not sure it is a good solution. And it does not return the same value than imap-quota.

Is there a command, a tool, in Dovecot to get it?

There is the maildirsize but it's very difficult to get the value with a script shell and with this file.

Thanks for your help.

Best regards,

--

• Nicolas.