PHPMailer is a class library for PHP that provides a collection of functions to build and send email messages. PHPMailer supports several ways of sending an email: mail(), Sendmail, Qmail & direct to SMTP servers. You can use any feature of SMTP-based e-mail, multiple recipients, etc. In short, we can say that PHPMailer is an efficient way to send an e-mail to PHP.

Using PHPMailer, we can easily send three types of email:
- plain text email
- HTML email
- email with attachments

Please watch PHPMailer tutorial, and let me know did you learn how to send an email in PHP.