Bulk email php?

Question

PHP

Good afternoon, there is a mysql database, it has records of registered users, there is a form
- Topic name
- Description
Help me to do so, filled out the form, when you click on the "Submit" button, so that it is sent to all users. 3rd day in labor and can't figure it out.......

Answer 1

Use the api of specialized services (heaps of them) for sending letters, otherwise everything will fall into spam.

Answer 2

1) the form sends the subject and description using the post method to the script
2) the script receives the subject and description, selects the emails of all users from the database into an array
3) we go through the array, send a letter with the subject and description to each
4) we find that all letters fall into spam after sending 200 emails in a row
5) we find that emails are no longer sent from shared after sending 500 emails in a row
6) we search and find ourselves in the banlists of all mail providers.
7) dancing, you are great!
No need to do kaku, if you want to spam - use external services a la mailchimp.