Python in a Nutshell

Name

preamble

Synopsis

Attribute m .preamble can be None or a string that becomes part of the message’s string form before the first boundary line. Only mail programs that don’t support multipart messages display this text to the user, so you can use this attribute to alert the user that your message is multipart and that a different mail program is needed to view it. preamble is a normal attribute of m: your program can access it when you’re examining an m that is fully built by whatever means, and your program can bind it when you’re building or modifying m in your program.