Increased visibility into rate-limiting in Gmail
We want to provide G Suite admins increased visibility into this rate-limiting process. Going forward, if Gmail rejects 25 or more messages to a single recipient within one hour, we’ll send you a list of impacted users and and the number of their rejected messages. To receive this notification, you need to enable the rate-limiting email alert.
We hope this list, along with the Email Log Search feature, will help you identify why messages are being rate-limited and the appropriate actions to take.
Launching to both Rapid Release and Scheduled Release
Available to all G Suite editions
Full rollout (1–3 days for feature visibility)
Admin action suggested/FYI
Help Center: Email alerts