Thank you for your input, feels like we are on the right track. I think we will set our purge at 2 years but i really like to your idea of a "reconnect" campaign Jessica, thanks for that. We have done one "wake the dead" campaign with similar purpose but not with the approach you describe, interesting touch!
I agree Elliott, I will need to review how our sync with SFDC will affect the idea when it comes to a yearly review so we don't delete SFDC contacts with invalid email info that are still very much of interest to us but will absolutely be cleaning up as much as possible before the initial sync.