The email function in PHP, commonly implemented using the mail() function, allows developers to send emails directly from a server-side script.
This built-in function provides a simple way to dispatch messages by specifying the recipient's email address, subject, message body, and optional headers like "From" or "Reply-To." Although it's easy to use for basic email needs, the mail() function relies on the server’s mail configuration, which can sometimes lead to deliverability issues or messages being marked as spam. For more robust solutions, developers often turn to libraries like PHPMailer or SwiftMailer, which offer greater control, security, and support for features like attachments and SMTP authentication.