NOTE this documentation is a work in progress.

• What's changed in version 4?
• Server environment requirements
• Two editions, One project

• Dependency Injection
• Required files
• Configurable preferences

• Sending a basic email
• Sending a HTML email
• Sending a multipart email (HTML and text)
• Sending a message containing images
• Sending to several recipients
• Sending to several separate recipients
• Sending an attachment
• Just for kicks

• The classic basic contact form
• A form which allows an attachment
• Mass mailing, Aynchronously

• Overview of the Transport System
• SMTP Transport
• The Sendmail Transport
• The Mail Transport
• The Failover Transport
• The Load Balanced Transport

• Overview of the MIME System
• The Message class
• The MimePart class
• The Attachment class
• The EmbeddedFile class
• The Image class
• Working with Headers
• Generating a string from a Message
• Making the most of a single instance (an Optimization)

• Overview of the Mailer class
• Adding Plugins
• Sending Messages
• Using Recipient Iterators (an Optimization)
• Capturing and Dealing with Failed Recipients

• Overview of the Cache System
• The Array Cache
• The Disk Cache