(PHP 4 >= 4.0.7, PECL mailparse:0.9-2.1.1)
mailparse_msg_parse_file — Parses a file
Parses a file. This is the optimal way of parsing a mail file that you have on disk.
Path to the file holding the message. The file is opened and streamed through the parser.
Returns a MIME resource representing the structure, or FALSE on error.