I have a workflow rule that generates an email order with pdf attachment. As of 16 November 2020 all was working 100%. Emails are delivered to a 3rd party email domain (ie: not @gmail.com) and a copy is delivered to several gmail addresses. As of 17 November all gmail addresses are still recieving the orders but it seems that the platform is not sending the emails to the 3rd party domain. I checked the audit log and there is no record of the emails being sent ie: they did not fail, they just did not send.