We have a content pool of say 10 different content blocks. We have a defined logic on how we wish to pull in the content, but, if you have been sent / have seen a particular block within the last 60 days, that particular block should not be available for output in the email.
Is there any way to achieve this?
My thinking is either Send Logging or creating a DE that stores the ID's of content blocks that are sent to subscribers - but it seems this would scale out of control in terms of data storage and the ampscript lookups needed?
Email volume is a minimum of 500.000 emails a week.