I've had this problem and you have to create a Decision Node for Multiple Registrations where you can enforce a wait step and stagger this to prevent overwrites that are too quick.
Marketo, as with all proper ISP/ESPs, has abuse@marketo.com and postmaster@ and DMARC setup to allow people to get removed.I wasn't aware that Marketo would block an email address ...
It does. It blows up your corp server and IP. Don't do it. We had big issues when sales gets to send mass emails w/o any list management.For GDPR, you would have to have opted in l...
Depends when someone activated Email 2.0 in your instance.Greg had a great post series on issues with converting emails from 1 to 2. We have a rule at my team to never update 1.0 w...