On March 13, at 4:53 AM Google has posted a report regarding an issue a number of users have been reporting. The problem hindered access to and the functionality of Gmail, with many reporting error messages, delays, and unexpected behavior. You can view the full report here.
Unfortunately, this issue, caused by Google’s own system glitch, may have affected your campaign sending through Snov.io. We have received a number of reports of outgoing emails being blocked, including a message about reaching a sending limit. Google has since reported the issue as resolved. All campaign sending through Snov.io should now work as well.
We are sorry for any inconvenience and our team is working to help all the affected users. If you’re still having trouble sending emails through Snov.io from your Gmail account, please contact our Customer Care at firstname.lastname@example.org or via chat so we can help you resolve any issues.