Graph on DownDetector shows that Gmail was down during Thursday morning-afternoon
Another subscriber to the platform named Michael Hubert wrote, “My emails are not being delivered. it says they are sent but no one is receiving them.” As bad as this sounds, it appears that the issue was limited in scope. After all, 761 reports on DownDetector, while a decent jump from the 33 reports submitted two and a half hours before the peak number, indicates that most people weren’t affected or didn’t know that Gmail was having problems.
As for the cause of the issue, Google wrote, “From preliminary analysis, the root cause of the issue appears to be an overload in Google Message Router (GMR). Google will complete a full incident report in the following days that will provide a detailed root cause.”