Understanding Google Mail Sending and Sync Limitations

Audience: Faculty, Staff and Students

This KB Article References: Google Mail
This Information is Intended for: Faculty, Staff, Students
Last Updated: March 22, 2017

Sending Limits

In order to prevent spam, Google will temporarily disable accounts that send a lot of email in a short time.

It's important to be aware of Google's sending limits:

  • Messages per day (2,000)
  • Recipients per message (2,000/ 500 external)
  • Total recipients per day (10,000)
  • External and unique recipients per day (3,000)

For alternatives, consider sending emails through Google Groups, Broadcast Email Messaging, or LISTSERV.

Bandwidth/Sync Limits

Similarly, Google Apps accounts also have limits on bandwidth and sync: "Certain activities that transfer large amounts of data in a short period of time, like synchronizing a Gmail account to a mobile phone or mail client, can cause an account to reach the bandwidth limit." If you're using Google Apps email to send many large files, a better tool that will help you avoid these bandwidth limits is Google Drive sharing.

See Bandwidth limits and Sync limits for more information. 

Additional Information


There are no additional resources available for this article.

Getting Help


The Division of Information Technology provides support on all of our services. If you require assistance please submit a support ticket through the IT Service Management system.

Submit A Ticket

Supported By


Customer Engagement and Support