imapsize-multi.pl

+ check email account(s) via IMAP for how many messages there are and
  compute their total size

+ compute "percentage full" of each account, using the specified
  size-quota, and send an informative email about usage

+ write the obtained information to a CSV file


usage:

+ adjust settings below

+ create a file listing the IMAP accounts to check, for example:


server1.example.com, user1@example.com, password_user1, quotaMB
server2.example.com, user2@example.com, password_user2, quotaMB


+ make sure the passwords cannot be read by unauthorized users!

+ run the script --- you may need to install additional perl modules

+ you can run the script from your contab to check the accounts regularly


This program is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see
<http://www.gnu.org/licenses/>.