PHP Mail Function: Not suitable for large number of mails

PHP Mail Function: Not suitable for large number of mails

The mail()function in PHP is not suitable for larger volumes of email in a loop. This function opens and closes an SMTP socket for each email, which is not very efficient.

As an alternative, we can use PEAR Mail for sending large mails. Please read the documentation here:

http://pear.php.net/package/Mail

http://pear.php.net/package/Mail_Queue