Your favorite Emacs mail program is not supported? Shame on me. But it is really easy to integrate other mail programs into mairix.el. Just do the following:
mairix.el with the mail file/folder as the
single argument. For example, the function mairix-rmail-display
is currently used for RMail and mairix-gnus-ephemeral-nndoc is
used for Gnus.
mairix-rmail-fetch-field and
mairix-gnus-fetch-field for RMail and Gnus, respectively.
mairix-mail-program.
Then add the functions to mairix-display-functions and
mairix-get-mail-header-functions.
And that's it!