"Do Not Mail " filters not working - why?
Can anyone tell me why a Do Not Mail filter would suddenly "stop working"?
I have several contacts in my Salesforce whose preferences are marked "Do Not Mail." My Marketo filters are set to exclude "Do Not Mail" and "MKTO Don't Mail," as well as another category within Salesforce.
The filters were working for months....until yesterday. A contact reported receiving mail. Checking into it, he did. However, the preferences to not mail were checked! Nothing has changed with this contact nor with my filters (it's a simple "send mail" campaign and list set that I clone). He did not receive e-mail at a new address.
Why would this happen, and how do I fix it?