PHPMailer

PHP Email Class:

Email form & class with image verification (antispambot protection).

• Can send emails with multiple TOs, CCs, BCCs and REPLY-TOs
• Redundant SMTP servers
• Multipart/alternative emails for mail clients that do not read HTML email
• Support for 8bit, base64, binary, and quoted-printable encoding
• Uses the same methods as the very popular AspEmail active server (COM) component
• SMTP authentication
• Word wrap

• Address reset functions
• HTML email
• Tested on multiple SMTP servers: Sendmail, qmail, Postfix, Imail, Exchange, etc
• Works on any platform
• Flexible debugging
• Custom mail headers
• Multiple fs, string, and binary attachments (those from database, string, etc)
• Embedded image support

Download it from here: http://phpmailer.sourceforge.net/