Here you can find something about mail and also news related addons for Emacs.

Mail clients for Emacsen are listed in CategoryMail.

Cite Tools:

* [[cite]] -- a small citation package
* MuCite -- a powerful citation tool which supports inital quoting (also in cooperation with the BigBrotherDataBase)
* SuperCite --  an emacs mode for fancy citations of email and Usenet messages
* TrivialCite -- citing and filling mails from other users
* [[xcite]] -- http://www.gentei.org/~yuuji/software/xcite.el (Japanese) from HiroseYuuji
* CitationConfigurationExamples -- example configurations of attribution lines, quoting chars and other citation related stuff

Signature Tools:

* AdvRandomSig -- advanced random signature inserter
* [[c-sig]] -- an emacs lisp application to insert signatures wisely
* DmsSig -- multiple automatically selected signatures
* [[Fortune]] -- use fortune to insert signatures
* MailSignature -- Lisp:mail-signature.el
* MailSignatureQuotes -- http://nwalsh.com/emacs/xmlquotes/mail-signature-quotes.el
* SigAdapt -- http://www-spi.lip6.fr/~queinnec/Miscellaneous/sigadapt.el
* SigBegone -- http://www.neilvandyke.org/sigbegone/sigbegone.el
* SigQuote -- http://bmrc.berkeley.edu/~trey/emacs/sig-quote.html
* SmartSig -- http://www.davep.org/emacs/smartsig.el
* RandomSig -- insert randomly choosen signatures into mails

Biff Tools (notification of new mail):

* BiffEl -- http://www.gentei.org/~yuuji/software/biff.el (Japanese) from HiroseYuuji
* [[alert]] -- http://gnufans.net/~deego/emacspub/lisp-mine/alert/dev/alert.el
* ByrdBiff -- Lisp:byrd-biff.el
* DisplayTime -- also has biff-functionality
* EmacsBiff -- flagging new mail on the modeline
* MailNotify -- Popup notify window when you get new mail.
* PopBiff -- Lisp:popbiff.el
** Lisp:popbiff2.el provides the setup to integrate mail notification for remote mail boxes with recent Emacs versions.  (Why were those changes net merged with the original popbiff?)

Address Books and Tools:

* BigBrotherDataBase -- See CategoryBbdb
* LbdbInterface -- http://www.davep.org/emacs/lbdb.el
* LovelySisterDataBase -- a rolodex-like database program for SEMI based MUA
* MailRc -- Lisp:mailrc.el
* MuttAliases -- lookup/insert mutt mail aliases
* BlackBook -- http://fly.srk.fer.hr/~hniksic/emacs/blackbook.el
* [[EUDC]] -- An Emacs client for directory servers (LDAP, PH).
* ExternalAbook -- Use external address books (such as the Mac OS X address book)
* [[Synonyms]] lets you search and browse any comma-separated values (CSV) file as a hyperlinked "thesaurus". This could as well be a list of contacts or any other CSV data. For example, export your Outlook (or Fire Fox) Contacts as a CSV file, then use Emacs to browse and search them!

Mail/News Modes:

* MailMode -- a mode for writing mail/news messages
* MessageMode -- another mode for writing mail/news messages, handles attachments
* MuttMode -- use emacs as editor for mutt
* PostMode -- use emacs as an external editor for mail and news

Improvements for the Mail/News Modes:

* AutoHeader -- ftp://ftp.pasta.cs.uit.no/pub/users/espensk/elisp/auto-header.el
* [[Chastise]] -- http://www.ftp.funet.fi/index/gnu/elisp-archive/misc/chastise.el.Z
* FileInMail -- http://www-spi.lip6.fr/~queinnec/Miscellaneous/fileinmail.el
* FmailUtils, random mail frobnication utilities -- 
http://www.splode.com/~friedman/software/emacs-lisp/src/fmailutils.el
* HeaderAction -- http://www.coling.uni-freiburg.de/~schauer/de/resources/emacs/header-action.el.gz
* MailCmpleAddr -- complete mail address or expand mail alias interactively
* MailField -- a small util to move between mail fields
* MailReorderHeaders, sort mail headers -- http://www.splode.com/~friedman/software/emacs-lisp/src/order-head.el (required FmailUtils)
* MairixSearch -- A package using mairix to index and search mails

Other Useful Modes:

* FetchmailMode -- mode for editing fetchmail configuration files
* FortuneMode -- interface to write fortunes quickly
* MailboxMode -- berkeley style aka standard mailbox browsing minor mode
* MuttRc -- generic mode for mutt configuration files
* [[muttrc-mode.el]] - another mode for mutt confuguration files
* ProcmailMode -- mode for editing procmail configuration files
* SpamassassinMode --  a mode for editing spamassassin configurations files

MIME for Emacs:

* [[Mailcap]] -- <code>/etc/mailcap</code>
* MetaMail, a Metamail interface for Emacs -- http://www.mit.edu/afs/sipb/contrib/emacs/elisp/metamail.el
* MimeCompose -- http://ftp.xemacs.org/Attic/elisp/mime-compose.el
* [[SEMI]] -- http://www.kanji.zinbun.kyoto-u.ac.jp/~tomo/elisp/SEMI/index.html.ja.iso-2022-jp
* SpookMime -- http://www.splode.com/users/friedman/software/emacs-lisp/src/spookmime.el
* tm -- MIME solution for Rmail, [[Gnus]], VM, [[MH-E]] and other mailer
* RmailMime -- MIME for Rmail http://www.emacswiki.org/cgi-bin/wiki/RmailMime

Encryption for Mails:

* [[Gpg]] -- Part of Gnus (in contrib)
* MailCrypt -- a powerful package to encrypt mail and news
* XPgpSig -- http://www.jpl.org/ftp/pub/elisp/x-pgp-sig-1.3.5.2.tar.gz

Viewing & Composing HTML Mails:

* [[w3]]
* HtmlToText
* MailMarkup -- http://www.newartisans.com/johnw/Emacs/mail-markup.el
* NsBrowse -- http://www.splode.com/users/friedman/software/emacs-lisp/src/ns-browse.el
* TextTwoHtml -- http://savannah.nongnu.org/cgi-bin/viewcvs/*checkout*/emhacks/emhacks/elisp/text-to-html.el?rev=HEAD&content-type=text/plain
* [[emacs-w3m]]

Spam Fighting Utils:

* SpamFilter -- http://www.geocities.co.jp/SiliconValley-PaloAlto/7043/spamfilter/spamfilter.el.txt
* SpamProbe -- http://www.davep.org/emacs/spamprobe.el
* SpamProd -- http://www.neilvandyke.org/spamprod/spamprod.el
* SpamStat
* [[UCE]] -- http://www.internet2.edu/~shalunov/uce/uce.el

X-Face and Face utils:

* CreateFaceHeader -- a function to insert a face header at point
* SelectXFace -- http://www.jpl.org/ftp/pub/elisp/select-xface-0.15.tar.gz
* [[XFace]] -- a package for displaying X-Face header in many EmacsMuas
* XFaceMagic -- Lisp:x-face-magic.el
* XFaceMini -- Lisp:x-face-mini.el

Fun:

* [[BinHex]] -- Decode hex code
* [[Geek]] -- http://www.splode.com/~friedman/software/emacs-lisp/src/geek.el
* [[Morse]] -- Encode and decode morse
* MsgCodes -- Lisp:msgcodes.el
* RotThirteenEl -- Encode and decode rot13
* SillyMail -- http://www.splode.com/~friedman/software/emacs-lisp/src/silly-mail.el

Other Stuff:

* AnonRemail -- http://wuarchive.wustl.edu/languages/elisp/interfaces/anon-remail.el.Z
* [[email]] -- easy archiving of outgoing mails
* MailFind -- http://www.brownale.demon.co.uk/mail-find.el
* MozMail -- http://my.gnus.org/filestore/download/287
* QueueMail -- Lisp:queue-mail.el
* TinyMail -- some mail add-ons
* vcard -- http://www.splode.com/users/friedman/software/emacs-lisp/src/vcard.el

Other modes which are useful but not mail related:

* Boxes -- http://boxes.thomasjensen.com/docs/boxes.el
* BoxQuote -- http://www.davep.org/emacs/boxquote.el
* FootnoteMode -- insert footnotes in mail and news