I have excel file with 1000+ records. Basically it has zipcode and corresponding email addresses. I need to create a custom wordpress plugin which queries this data and sends the mail. It would be nice if I can show the data in admin area of the Wordpress.
Please suggest me Which is best way to maintain the data:
create a custom table in wordpress? or
Create a table outside of Wordpress, connect to it whenever I need to pull data?
Thanks,