Supported Transports and Formats Sending with: SMTP "MTA" (PHP's mail()) Reading from: POP3, IMAP, MBOX, Files, Variables Supported formats: multipart/alternative: text/html mail multipart/mixed: attachments multipart/related: HTML mail with inline images multipart/digest: mailinglist digests Overview: http://ez.no/doc/components/view/latest/(file)/Mail_rfcs.html