This information is copied from the Google Apps Documentation and Support Site as of 8.21.2013. To see the most updated information, please click here: https://support.google.com/a/bin/answer.py?hl=en&answer=166852
Google Apps limits the amount of mail a user can send. The limits restrict the number of messages sent per day and the number of recipients per message. After reaching one of these limits, a user cannot send new messages but can still access his or her account and receive incoming email.
The following peak limits apply to HUSD's Google Apps for Education edition: