I need to exclude people who have not opened our emails in the 4 past months.
I have several ideas, can you please tell me the best solution and help me?
Query: Any idea of how I can exctract them?
Create a new D.E for exclusion I extracted Subsriber ID of non openers from several sends. I selected with excel the IDs of those that come out in all sends (-> I now have a list of all those who didnt open neither of them). I imported them as a D.E and would like to use it as an exlcusion list. --> i am not very convinced about this.
Data Filters: They do not work for me. Data and number of non openers does not match with real data.
Thanks in advance,