WordPress plugin: efficient way to store large data
There’re few plugins to storage it on WordPress database. I recommend you save as users. I believe one of these plugins will help you: https://wordpress.org/plugins/wp-all-import/ https://wordpress.org/plugins/wp-ultimate-csv-importer/ To send emails, you might use an Email Marketing provider, like Mailchimp. In this case you can import all the users to your mailchimp account with this plugin: https://wordpress.org/plugins/mailchimp-sync/ … Read more