Does anybody know... where our database has pesky duplicates, and we mark one email like email@example.com as either unsubscribed or invalid, will that unsubscribed or invalid automatically go across all other leads where email = firstname.lastname@example.org ?
The value will not be moved over to the other record.
If the subscribed lead qualifies for a campaign, it is likely to receive the email...at least that's what I have seen, although I think Marketo may have fixed that. To be sure, you should test it on two records you own.
Now, there is a master table of unsubscribes so if both leads were deleted and one came back, it would be unsubscribed.
"Unsubscribed" will propagate to other records with the same email address. This is part of the durable unsubscribe feature. Other attributes like Email Invalid, Marketing Suspended and Black Listed will not be propagated.
Thanks Josh, thanks Jep. Is there something we can do to set the functionality to propagate Email Invalid across all duplicates? We want to track Email Invalid and Unsubscribe separately, but would like the Email Invalid to use that same Unsubscribe functionality.
Propagating data value changes to fields other than "Unsubscribed" to duplicates can only be done via the API. For example, whenever "Email Invalid" changes, you could use a Webhook to call a custom script that uses the API to search for dupes and also set those to "Email Invalid".