Swift can be used in sending emails using a custom transport implementation, or ready-made technologies like SMTP, sendmail or postfix.
Compared with PHPMailer, the interface for Swift is both tighter and more intuitive.
Here are some key features of "Swift Mailer":
· Encoders
· Plugins for customizing the library
· MIME compliant HTML/multipart emails
· Protect from header injection attacks
· Handle large attachments
· Works with inline/embedded images
· Low memory use
Requirements:
· PHP 5.2 or higher
· PHP's SPL extension