mail-source-fetcher-alist

mail-source-fetcher-alist is a variable defined in `mail-source.el'.
Its value is

((file mail-source-fetch-file) (directory mail-source-fetch-directory) (pop mail-source-fetch-pop) (maildir mail-source-fetch-maildir) (imap mail-source-fetch-imap))


Documentation:
A mapping from source type to fetcher function.