I believe that it's because of Gmail's operational issue. https://www.google.com/appsstatus#hl=en&v=issue&sid=1&iid=a45de3b26d6c5872f4cfe8e3424d7a82
You can also check Pipedrive status page to see any ongoing issues:https://status.pipedrive.com
We do have an issue with sending mails from Pipedrive.
Hope it helps.
Ted is right. We have an ongoing issue with the email sync integration. Our status page has more information about it. Our engineering team is aware and actively working on a solution. Please keep an eye on the status page and we will update it when the issue is resolved.
Thank you for your feedback!
Hi, @Emma Berry
According to the Pipedrive status page and Google status page, all the issues are fixed. I hope you can send emails from Pipedrive again.