Sarah_Cassell

Commenting here, @Michael_Florin, to say that we've been experiencing a similar issue since April 1. I haven't had much luck with finding or getting clarity to what these error id codes mean, but following this thread in case someone posts an answer! I did find this resource on Salesforce's support ...

Hi Jenn, We were having the same issue. My colleague submitted a service desk ticket and this was the response she received from Marketo:"Our Engineering and Operations teams have identified an issue with emails not being successfully delivered. Campaigns and programs will show that the emails have ...

Thanks, Dory. A few of the individuals on the list may be marked as unsubscribed, but all of the test emails we were using were active users in the database. I'll look more into your suggestion and see if that's part of the issue.