Investigating email sending provider @gmail.com send delays

SendGrid's engineering team made an internal adjustment which appears to have resulted in a significant improvement to how quickly emails are being received by @gmail.com inboxes. The SendGrid team is reporting that these issues may have been caused by the new bulk email sending rules recently rolled out by Google and Yahoo and are continuing to investigate. We will continue to monitor and are actively working with the SendGrid team to implement safeguards to prevent issues like this in the future.