What is the primary purpose of Mail Functions in PHP?

Reference guide for the PHP built-in mail() function, header parameters, and MIME email dispatch.

Are Mail Functions enabled by default in PHP 8?

Yes, standard Mail Functions are core parts of the PHP standard library and require no external PECL extensions.

PHP Mail Functions Reference Guide

This reference page provides a comprehensive, alphabetical catalog of all built-in Mail Functions in PHP. In modern web development and university exams (BCA, BSc CS, B.Tech), understanding these core functions accelerates programming speed and prevents you from reinventing existing standard library tools.

Quick Tip: In modern PHP 8, you can use named arguments to specify parameters without having to memorize optional default argument positions!

Function	Description
mail.add_x_header	Add X-PHP-Originating-Script that will include UID of the script followed by the filename. For PHP 5.3.0 and above
mail.log	The path to a log file that will log all mail() calls. Log include full path of script, line number, To address and headers. For PHP 5.3.0 and above
SMTP	Windows only: The DNS name or IP address of the SMTP server
smtp_port	Windows only: The SMTP port number. For PHP 4.3.0 and above
sendmail_from	Windows only: Specifies the "from" address to be used when sending mail from mail()
sendmail_path	Specifies where the sendmail program can be found. This directive works also under Windows. If set, SMTP, smtp_port and sendmail_from are ignored

PHP Mail Functions Reference Guide

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