I'm having a major problem that is messing up my operations and I am stumped, even MKTO support hasn't identified an answer and it's been escalated twice. Trying a post here to see if anyone else has any ideas around this. We use Zoom Webinar integration for our webinars and all of a sudden on the registration forms I keep seeing the Invalid Email Address Fail. I have used our normal setup where it has always worked and it's not working. The interesting thing why I don't think the Webhook is broken, is because the registration actually does get processed in ZOOM. The problem is the unique webinar url doesn't get registered in the person's MKTO record.
You can see the Detail in the "Call Webhook" activity type. Also this is just my tests but this also happens to other email types.
Activity Details from clicking on the above Activity Type.