Several contacts have unsubscribed from marketing emails but are still receiving emails. They are in the unsubscribed list in lead data base and also not in the smart list of marketable leads. For email sends, the first filter I use is 'member of smart list - marketable leads' yet these contacts are still receiving marketing emails. Email opt out is also not being marked in sfdc when these contacts unsubscribe. Any help would be great!
Is there a duplicate record receiving the emails? This is my hunch.
Are you using the out of the box Unsubscribe field?
No the records are not dupes. I'm not sure what unsubscribe field we are using as this instance of marketo was set up before I came on. I don't have a lot of insight to why or how things are set up the way they are (which is also part of the problem)
Could the email be transactional or operational and that's causing Marketo to ignore the opt out?
The email that was sent was not transactional or operational. The contacts have been receiving all promotional marketing emails after unsubscribing multiple times
I second what has been said above. I'd look at the specific email that's going out to see if it's operational and confirm there are no duplicates in your system. Also, ensure that you're using the system unsubscribe fields and not secondary fields that go into SFDC.
I agree with Dory, make sure that the right unsubscribe field is connected and in use. I thought my CRM unsubscribe was connected to Marketo but then noticed my records weren't updating properly. Turns out the field was never sent over! When we did get it synced, it overwrote some of the unsubscribed because of the last updated date / system. For example, Jane unsubscribed through Marketo but her most recent record updated was Salesforce where she is NOT unsubscribed. Suddenly she's opted back in. #Nightmare.
Anyway, since it sounds like you inherited an existing system I'd double check and make sure there are not multiple opt out fields created by a previous admin.