I want to send a email to my users with the following conditions:
1. every email has the same content
2. addressee would see only his email address in the to field( not other addressees )
3. Mandrill and thier wpmandrill plugin are using
4. there are 40,000 addressees
Is there a better function to call rather than using a for/foreach loop?
P.S.: not using MailChimp because we need to send these email once a month only