collection of ``email headers'' as defined by the Internet standard

\rfc{822}. It is used in various contexts, usually to read such

headers from a file. This module also defines a helper class

Note that there's a separate module to read \UNIX{}, MH, and MMDF

style mailbox files: \refmodule{mailbox}\refstmodindex{mailbox}.

switch dates. Not enough to worry about for common use.

\end{funcdesc}

A \class{Message} instance has the following methods:

\begin{methoddesc}{isheader}{line}

Returns a line's canonicalized fieldname (the dictionary key that will

returns None (implying that parsing should stop here and the line be

pushed back on the input stream). It is sometimes useful to override

this method in a subclass.

\begin{methoddesc}{getfirstmatchingheader}{name}

Return a list of lines comprising the first header matching

\end{methoddesc}

\begin{methoddesc}{getrawheader}{name}

If multiple headers exist that match the named header (e.g. if there

are several \code{Cc} headers), all are parsed for addresses. Any

continuation lines the named headers contain are also parsed.

\end{methoddesc}

\begin{methoddesc}{getdate}{name}

\end{memberdesc}

\begin{memberdesc}{fp}

\end{memberdesc}

An \class{AddressList} instance has the following methods: