We have about 190K usable emails in LO, but we only actively email 50K of them. Many are from event registrations that are over 10 years old imported from now-sunsetted events from Sphere. Thousands are imported one-time use solicitations, again, from YEARS ago. We'd like to bulk delete anything that hasn't had activity in, say, 5 years, mainly to help see where we stand in our deduping task list. Thank you for your consideration.