17:00 MT- SendGrid would like to apologize for the email delays that you and your customers might have been experiencing in the recent days.  To accommodate for the seasonal email loads we are actively making code changes and environment changes to improve efficiency and scale our capacity.  Although we believe we have resolved most of the issues we will continue to actively monitor email traffic and update this post as needed.  As always if you experience problems please contact SendGrid support. - Ken

13:25 MT - We're having delivery delays with one of our server, so only some customers are experiencing this issue. We're working to resolve it immediately, and should have an update within hours. This issue began around 10:00 MT - Jacob