Are leads with invalid email addresses counted as Known Leads? In other words, if you import a lead into Marketo and email them, and the email hard bounces, does Marketo automatically remove that lead from the Known Leads count in the pie chart on the Lead Database tab? Or does Marketo still count this lead as a lead even though the email is invalid?
Thanks,
David
Yes, the leads are still 'known' in the sense that you have contact information for them. Unknown tend to be leads that are cookied but don't have any information associated to them but their activity on your pages tagged with Muchkin code.
If you're worried about having a lot of bounced email addresses, you can batch them out regularly as part of your database maintenance.