PHPMailer

  • Probably the world's most popular code for sending email from PHP!
  • Used by many open-source projects: WordPress, Drupal, 1CRM, SugarCRM, Yii, Joomla! and many more
  • Integrated SMTP support - send without a local mail server
  • Send emails with multiple TOs, CCs, BCCs and REPLY-TOs
  • Multipart/alternative emails for mail clients that do not read HTML email
  • Support for UTF-8 content and 8bit, base64, binary, and quoted-printable encodings
  • SMTP authentication with LOGIN, PLAIN, NTLM, CRAM-MD5 and Google's XOAUTH2 mechanisms over SSL and TLS transports
  • Error messages in 47 languages!
  • DKIM and S/MIME signing support
  • Compatible with PHP 5.0 and later
  • Much more!

You can try example of sending email in Resume Builder or Contact

Homepage: https://github.com/PHPMailer/PHPMailer