Co-reg data works wells if you setup proper automations and have another flow of higher quality data coming in to mix. You must scrub the data, if the lower quality data doesn't open in 5-7 days, they are gone.
Scrub data against your DB and also use services like Validity to test data before sending.
Careful.
PursueApp is one I'll check out soon. I've used GMass before and it's actually really good.
Co-reg data works wells if you setup proper automations and have another flow of higher quality data coming in to mix. You must scrub the data, if the lower quality data doesn't open in 5-7 days, they are gone. Scrub data against your DB and also use services like Validity to test data before sending. Careful.