All one needs to do is buy the  list with 1-1-1900 to today as last sale date and suppress against that a list without the sale date as a filter. 

@Matthew Rembish Think of it this way, if you were to receive mass mail from a particular source there are chances it may be filtered as spam.

Absentee out of state ownersBecause this list is typically small, mainly due to the filter of out of state absentee owners, I will add this list as well. 30 Plus % of equity5 plus years of home ownershipNo corporationsNo trusts unless in a high trust stateSingle Family ResidencesAccessed value not to exceed the area’s median home value. 50% Absentee 50% Owner Occupied If my budget was such that I could send to all home owners then I wouldn’t care what percentage of absentees to owner occupied there are.

And of course, there are other filters that go in to an absentee list as Michael mentions.Likewise, there are other filters that go in to expired listings as well to get the best response.

Absentee out of state ownersBecause this list is typically small, mainly due to the filter of out of state absentee owners, I will add this list as well. 30 Plus % of equity5 plus years of home ownershipNo corporationsNo trusts unless in a high trust stateSingle Family ResidencesAccessed value not to exceed the area’s median home value. 50% Absentee 50% Owner OccupiedAs for what to send them.Naked Yellow Letter Small Text PCwindow yellow letterlarge PCtyped letterZipletterAs for text and that kind of thing. 

I can find all sorts of information about:Services to curate a listCriteria to help filter your listServices to manage mailersInformation on mailer expectationsDoes anyone offer a mailer service for 1 address at a time?

After all this prepping, when they finally hear my offer, nearly every time they are absolutely floored/insulted.Does anybody have any techniques they use to help to filter these people out?

Unfortunately, to your point, they might not have the desire since they might simply not be investors... any thoughts on how to filter more?

On multi-family its tough  using an equity filter so some may not have equity.

Originally posted by @Allison Massey:Learning from this thread... thanks  wanted to jump in... how do you filter for length of ownership on ListSource?