How to send emails in php?

Question

PHP

Good evening. Help me deal with the email distribution, there is a customer base of the company, about 300 people, it is necessary to send them messages about once a week. I tried to send the mail () function through a loop, but the hosting limits are 20 letters per minute and not everything reaches. Push at least where to dig, or it may be easier to use some services

Answer 1

Alternatively, send a php script via smtp.
Link mail for the domain to Yandex (Google), compose mailing templates according to the rules, add the ability to unsubscribe from the database, and please. Fast, simple and reliable.

Answer 2

CRON tasks. They run at the specified frequency, so run them once a week with an interval of a couple of minutes.