One of the most useful innovations in fandom over the last couple of years has been the growth of newsletter communities on LiveJournals. The communities provide daily or weekly summaries of all the activities in the fandom covering links to news, fic, episode reviews, discussion, art...if it's happening in fandom, it will usually be in the newsletter. Unfortunately, there doesn't appear to be an index of them anywhere. Hence this page - an index, by fandom, of the LiveJournal newsletter communities. Browse it, use it and if you know of one that isn't listed here, let me know and I'll add it.
Edited to add: Newsletters are starting to pop up on the other LJ-like journalling systems so this index will also be covering anything on InsaneJournal, GreatestJournal and JournalFen.
Latest Additions
Multi-fandom: c6d_weekly C6D stands for Canadian 6 Degrees. Loosely defined, this is a large group of related fandoms that have some connection to the television show due South and now covers over 40 small fandoms. This weekly newsletter covers all the news, announcements, fic, art and discussion for these fandoms.
Gossip Girl: gossipgirlnews Gossip Girl News is a triweekly newsletter dedicated to bringing you all the dish on the going-ons in the Gossip Girl fandom community. They feature news, resources, commentary, graphics, fanfiction, fanvids, challenges, celebrity gossip, and more. Fresh editions are published on Mondays, Wednesdays, and Fridays.
General and multi-fandom
metafandom Issued every two days, this newsletter covers all fandoms and links to meta discussion of all kinds.
tvrpg_herald Multi-fandom weekly newsletter covering RPG news and announcements (Veronica Mars, Roswell, Alias, Mutant X, Six Feet Under, Dark Angel, Gilmore Girls, Dawson's Creek, LOST and Firefly).
daily_themes Daily multi-fandom newsletter linking to fiction posted in themed communities.
comicstore_news Daily news letter covering fiction, news, discussion and graphics for all comic-based fandoms. Helpfully, fiction is separated by comic publisher to make it easier to find your favourite characters.
monitor_duty Published twice weekly, this newsletter also covers comics and is organised by publisher.
crossover_news Weekly newsletter for fiction, art, videos, community announcements and challenges covering every fandom cross-over imaginable.
despatches If you're a fan of any of the Age of Sail fandoms (PotC, Hornblower, Patric O'Brian etc.), this weekly newsletter will be a huge bonus bringing all the fic, news, art and discussion together in one place.
femslash_today Covering all fandoms except Harry Potter (due to it's already femslash excellent newsletter) and anime, this daily newsletter brings you the femslash fic from every fandom around.
whedon_updates Daily newsletter covering news, fiction, announcements, art and challenges in all the Joss Whedon fandoms. Also includes links to any relevant newsletter published each day.
the_lj_herald Instead of joining all of the various LJ news communities, this community summarises them all and includes the bugs, fixes, news, updates and server news.
vidder_weekly Weekly newsletter for vidders and vid fans with links new releases, articles, meta, troubleshooting guides and spotlights.
thoughtfulfan Weekly news letter linking to meta on fannish sources.
veni_vidi_vids Daily multi-fandom newsletter for music vids - if a new vid is out, this newsletter will list it. Each entry is broken down by fandom with pairing if appropriate and also lists contests, awards etc..
girlgerm_news Weekly newsletter devoted to female characters in any fandom. Slash, het and gen are all covered with the emphasis being on fic, art, meta and vids centering on one (or more) of the female characters in the fandom.
het_newsletter Weekly cross-fandom newsletter featuring fic, art, videos, meta, community announcements and anything else that's relevant in the world of het ships.
c6d_weekly C6D stands for Canadian 6 Degrees. Loosely defined, this is a large group of related fandoms that have some connection to the television show due South and now covers over 40 small fandoms. This weekly newsletter covers all the news, announcements, fic, art and discussion for these fandoms.
Original fiction
origslash_news Monthly newsletter for original slash and femmslash fans. Details new fiction, discussion, market reports, calls for submission (paying and non-paying) and anything else of interest to fans and writers of original slash fiction.
24
24_newsletter Weekly newsletter summarising all the fiction, art, news and challenges in the 24 fandom.
Avatar
atla_press Daily newsletter with all the fic, discussion, activities, graphics and news for the Avatar fandom.
Babylon 5
universe_today Weekly newsletter updating all the news, fic, art and discussion in the B5 universe.
Battlestar Galactica
galacticanews Daily newsletter covering news, announcements, challenges, discussion and artwork for BSG - fiction is covered by a separate newsletter.
the_wireless Newsletter issued every three days (or so) covering fanfiction of all flavours for BSG.
starbuck_daily Weekly newsletter bringing the news, fic, discussion and graphics about Starbuck and her RL alter-ego.
Bleach
bleach_news Daily newsletter for the Bleach anime fandom.
Bones
j_institute Weekly newsletter covering all the Bones activity out there (not updated since November 2006).
bones_news Active daily newsletter for Bones fans covering news, fiction, art, announcements and discussion.
Buffy and Angel
su_herald Daily newsletter covering art, fic, recs and discussion for Buffy and Angel.
rpg_herald Update every few days, this newsletter covers news, announcements and information for Buffy and Angel RPGs.
watching_daily Daily newsletter just for Wesley Wyndam-Pryce fans.
giles_watchers Daily newsletter for all your Giles-y needs.
watchingxander Weekly newsletter for any and all Xander activity.
bc_updates Daily newsletter summarising all the fiction posted to the bloodclaim Spike/Xander fiction community.
Chalet School
the_cbb_digest Issued once a week, this newsletter summarises all the goings-on and news over at the Chaletian Bulletin Board, home to many Chalet School fans and a useful contact for all the news on re-prints, second-hand for sale, meetings, fiction, discussion and anything else the board happens to discuss.
Chuck
chucknews Daily newsletter bringing you all the news, fanfiction, discussion and art for the Chuck fandom.
CLAMP
clamp_info Newsletter covering CLAMP news and fiction (not updated since December 2006).
Criminal Minds
bau_inbox Issued three times a week, this newsletter digs out all the fiction, news, art and discussion for Criminal Minds, including off LJ links.
CSI
csi_gazette Daily newsletter with news, fic, art and vids for all the CSI fandoms.
Dexter
dexter_news Weekly newsletter linking to all the news, announcements, fic, art and discussion for the Dexter fandom.
Doctor Who
who_daily Daily comprehensive newsletter covering all the news and fannish activities for both old and new series.
torchwood_daily Daily newsletter for all the goings on in the Torchwood fandom (inactive)
torchwood_three Daily active newsletter for fic, discussion, graphics and anything else Torchwood related.
soniclipstick Produced daily (except Saturdays), this newsletter brings together all the news, art, fanfiction and discussion about Sarah Jane Smith whether it's her appearances in Doctor Who, Big Finish productions or the new Sarah Jane Adventures.
the_spdn Thrice-weekly (Sunday, Tuesday and Thursday) newsletter covering all the fic, art and discussion for Doctor/Rose shippers. Make sure you read the profile description - this newsletter links to some locked posts because some of the best Doctor/Rose stuff is happening behind f-lock these days.
Due South
ds_weekly Weekly newsletter covering all the activity in Due South including a section of links from the ds_recsredux community.
Eureka
eureka_newslttr Weekly newsletter covering news, fic, vids, downloads and discussion for the Eureka fandom.
Farscape
farscape_weekly Weekly newsletter of everything happening on LiveJournal for Farscape fans.
Final Fantasy
ff_press Daily newsletter covering all the Final Fantasy activity, each edition helpfully organised by game number.
Firefly
the_cortex Daily newsletter for news, fic, art and discussion in the Firefly fandom.
tea_dumplins Daily newsletter for Jayne/River fans covering news, fic, art and discussion.
rpgbroadwave Newsletter covering all the RPG news for Firefly (not updated since June 2006).
Friday Night Lights
dillon_panthers Weekly newsletter published each Friday covering fic, vids, graphics and news for the Friday Night Lights fandom.
Full Metal Alchemist
fma_herald Daily newsletter for the Full Metal Alchemist fandom, both anime and manga, detailing all the fanfiction, art, announcements, discussion and links that can be found.
Good Omens
theadvertiser Weekly newsletter for the Good Omens fandom produced every Monday with all the news, fanfic, art activity in the fandom.
Gossip Girl
gossipgirlnews Gossip Girl News is a triweekly newsletter dedicated to bringing you all the dish on the going-ons in the Gossip Girl fandom community. They feature news, resources, commentary, graphics, fanfiction, fanvids, challenges, celebrity gossip, and more. Fresh editions are published on Mondays, Wednesdays, and Fridays.
Grey's Anatomy
anatomynews Weekly newsletter with news, fic, discussion, vids and art for Grey's Anatomy fans.
greysnewsletter Period newsletter that was covering all aspects of Grey's Anatomy fandom, but has recently converted to being a fic only letter.
seattlegrace Daily news letter for news, fic, art and other stuff related to Grey's Anatomy (not updated since December 2005).
Gundam Wing
gundam_herald Daily newsletter covering all aspects of the Gundam Wing fandom.
Harry Potter
daily_snitch Daily newsletter covering fandom news, archive updates, discussions, communities and the odd fic rec, this is a valuable resource for keeping up with the news in a busy fandom.
potter_prophet Daily newsletter covering everything Potter related, be it art, news, fiction, or discussion, with one big difference from the Daily Snitch - this journal is on InsaneJournal and it's the newsletter for all Potter happenings on IJ.
hogwarts_today Another daily newsletter covering fandom news and announcements, providing links that the daily_snitch may not have found.
hp_art_daily Daily newsletter covering all the fan art, on and off LiveJournal, for Harry Potter.
girls_today Produced several times a month, this newsletter provides fic and art recs, community news and announcements for Harry Potter femslash fans.
hpicons_weekly Weekly newsletter just for Harry Potter icons (not updated since July 2006).
rpg_prophet Harry Potter RPG fan? This weekly newsletter provides news, announcements and updates on all Harry Potter RPG activity.
snapenews Daily newsletter covering all Snape-related news and fandom activity.
sirius_news Daily newsletter covering all Sirius Black news and fannish activity.
darklord_news Weekly newsletter for anything to do with Tom Riddle or Lord Voldemort.
obhwf_weekly Weekly newsletter for everything to do with the Weasleys.
hermione_news Issued two or three times a week, this newsletter covers all the Hermione Granger activity.
lucius_recs Weekly newsletter covering all the Lucius Malfoy activity in fandom with a few art and fic recs from the man himself *g*
longbottom_wkly Weekly newsletter focusing on the Longbottom family members.
mwpp_weekly Weekly newsletter providing recs to all characters and pairings who attended Hogwarts in the Marauders Era (not updated since May 2006).
deatheatertimes Weekly newsletter covering all the Death Eater characters from Harry Potter (not updated since June 2006).
regulusreport Weekly newsletter covering all fannish activity for Regulus Black (not updated since August 2006).
flintnews Weekly newsletter covering all Marcus Flint activity.
rs_prophet Weekly newsletter for all the Remus/Sirius activity out there.
hd_prophet Daily newsletter covering everything a Harry/Draco fan could need.
rhr_daily Daily newsletter for all the Ron/Hermione news, art fic and updates.
hpsb_prohpet Monthly newsletter covering all the Harry/Sirius news out there.
rlhp_prophet Weekly newsletter for Harry/Remus fans (not updated since March 2006).
sshp_prophet Weekly newsletter covering all the Harry/Snape activity that can be found. Edited 17/03/08: This newsletter has now moved to InsaneJournal - the link has been updated. There is a syndicated feed available for LJers.
snupin_prophet Weekly newsletter focusing on anything to do with Snape/Lupin.
snaco_prophet Weekly newsletter for Snape/Draco fans (not updated since April 2006).
hg_daily Daily newsletter for all the Harry/Ginny fans - there may also be occasional links to Ron/Hermione information.
hpgw_otp Weekly newsletter covering all the Harry/Ginny activity out there.
hhr_news Weekly newsletter for all your Harry/Hermione needs.
dhr_news Weekly newsletter for Draco/Hermione fans.
harry_ron_recs Weekly digest for Harry/Ron news, fic, art and recs.
snack-prophet A bi-weekly newsletter with all the fiction and art updates for Snape/Black fans.
rpg_prophet Weekly newsletter updating all the news, fanwork, discussion searches and everything else happening in the world of Harry Potter RPGs.
hgss_digest Daily newsletter of recs for Hermione/Snape fans.
quibbler_report Daily recs letter (I have typed that correctly) with fic, art, challenges and discussion for Harry Potter fans.
kingsley_news Monthly or twice monthly newsletter devoted to fic, art and news for Kingsley Shacklebolt.
pansy_news Weekly newsletter, published every Monday, dedicated to Pansy Parkinson bringing all the news, fic, art and discussion.
loonynews Weekly newsletter for all the art, fanart, discussion and news focused on Luna Lovegood. There is also an InsaneJournal version for those on IJ.
ass_news Weekly newsletter Albus Severus/Scorpius fans, listing fanart, multimedia, news, fiction and any other bits and pieces the editors can find.
Heroes
ninth_wonders Daily newsletter for all the activity in the Heroes fandom including links to recs and multimedia content such as podcasts.
Highlander
hl_flash Regular newsletter produced every two to three days rounding up all the Highlander activity including recs, discussion and challenges.
House
house_news Daily newsletter devoted to all the happenings in the House fandom.
house_notice Issued three times a week, this newsletter covers links to news, fic, art and discussion.
house_md_news Daily newsletter with the fic, art, news, discussion and vids for the House fandom.
InuYasha
sengoku_times Twice weekly newsletter for the InuYasha fandom covering all the art, news, discussion and fiction happening around LiveJournal.
Kyou Kara Maou
the_daily_maou Daily newsletter for all your KKM needs whether that is news, reviews, fic, discussion or art.
Kingdom Hearts
kh_press Daily newsletter covering all the Kingdom Hearts activity.
Life on Mars
mars_daily Daily newsletter covering all aspects of the Life on Mars fandom and it's official spin-offs including Ashes to Ashes. Links to news, fiction, discussion, graphics, challenges and vids for all your LoM needs.
Lost
lost_news Daily newsletter covering all the news, fics, vids and discussion for Lost (not updated since January 2006).
skater_news Periodic newsletter for Sawyer/Kate fans issued several times a month.
jater_news Daily newsletter devoted for Jack/Kate shippers (not updated since March 2006).
Lord of the Rings
middleearthnews Issued every Monday, Wednesday and Friday, this comprehensive newsletter covers any Tolkien related news and fannish activity.
four_lobsters Daily LotR RPS newsletter (not updated since November 2005).
lotrips_news Daily newsletter with fic, art and news for Lord of the Rings RPF (not updated since March 2006).
Metal Gear Solid
mgsnews Weekly (or whenever there is news in this small fandom) digest of the news, fic, art and discussion in the Metal Gear Solid fandom.
Naruto
naruto_news Daily newsletter detailing all the fanfiction, art, icons, discussions and announcements for the Naruto fandom.
NCIS
ncis_newsletter Comprehensive daily newsletter covering everything that happens or is published in the NCIS fandom.
The Office (US)
scranton_times Newsletter issued every other day covering news, fic and art for the US version of The Office.
One Piece
grand_line_vine Daily comprehensive newsletter for anything to do with the One Piece fandom.
Ouran
ouran_today Daily newsletter gathering the discussion, fic and art for the Ouran fandom.
Phantom of the Opera
operanotes All the happenings in the Phantom of the Opera world, on and off-LiveJournal, produced several times a month.
Pirates of the Caribbean
isla_tortuga Weekly newsletter rounding up all the news and activity from PotC, including RPF as well as neatly divided new and updated fiction.
Pop and Popslash
thispoplife Monthly newsletter dedicated to the fic, communities, recs and videos for the various popslash fandoms.
nevergone_news Daily newsletter with all the news, fic, graphics and discussion in the Backstreet Boys fandom (not updated since December 2005).
pop_newsletter New weekly newsletter linking to fic, art, recs, discussion and vids for all the various pop fandoms in any combination.
dotcoms_refresh Daily newsletter covering a number of the RPF Bandoms including All-American Rejects, Brand New, Cobra Starship etc. Features art, fiction, discussion, recs, concert reports and fandom information.
Prince of Tennis
teni_press Periodic newsletter for the Prince of Tennis fandom covering fic, news and artwork (not updated since September 2006).
Prison Break
prisonbreaknews Daily newsletter covering all the Prison Break activity, including new community announcements and RPF as well as the usual goodies.
Psych
psychnews Weekly newsletter covering fiction, news, art and discussion for the Psych fandom.
Queer As Folk (US)
_in_babylon Daily newsletter for news, fic, art and discussion in the Queer as Folk (US) fandom.
Saiyuki
saiyuki_news New daily newsletter for the Saiyuki fandom covering all the latest news, fiction, art and discussion.
Sentinel
ts_newsletter Weekly newsletter for The Sentinel fans, linking to all the new fic, discussions, meta, art and vids in the fandom. Includes occasional spotlight feature for particularly good websites that new fans may not be aware of.
Smallville
sv_digest Weekly digest of links to new Smallville fanfic (not updated since April 2005).
fandom_bb Weekly newsletter of links to all the news and discussion in the Smallville fandom (not updated since May 2005).
sv_ledger Issued every five days, this newsletter gathers the best fics, discussion, meta, graphics, vids and news in the Smallville fandom.
chloe_news Daily newsletter covering all the fiction, discussion, art, videos and news for Chloe Sullivan in Smallville.
Sports Night
sn_updates Weekly newsletter for fans of Sports Night, listing all the news, announcements, fic, art and discussion.
Starsky and Hutch
sh_roundup Issued every two weeks, this newsletter rounds up all the news, fic, art, video and anything else that relates to the Starsky and Hutch fandom.
Stargate
sg1_debrief Full issue released every two weeks, half issue with announcements and new episode reviews produced in the off week.
Stargate Atlantis
sga_newsletter Daily comprehensive newsletter covering every aspect of the Atlantis fandom.
sgagirls_weekly Brand new weekly community focusing on the news centering on the women of Stargate Atlantis.
jt_newsletter Weekly newsletter for everything John/Teyla on Atlantis including fic, news, art and vids. Recently resurrected after a long hiatus, it is now published every Friday.
Star Ocean
so_watch Weekly newsletter for all the Star Ocean LiveJournal fandom news.
Star Wars
swfandomdaily Daily newsletter for all the off-LiveJournal activity in the Star Wars fandom (not updated since July 2006).
jedi_news Daily newsletter of everything happening on LiveJournal in the Star Wars fandom.
kotor_holo Daily newsletter of everything happening in the Star Wars: Knights of the Old Republic (KOTOR) fandom both inclusive and exclusive of Livejournal. Update: The newsletter is under new management and has changed to a weekly newsletter.
Supernatural
spnnewsletter Comprehensive daily newsletter covering all aspects of the Supernatural fandom.
Tokyo Babylon and X
prophecie Weekly newspaper covering fic, graphics and anything else to do with Tokyo Babylon and X (not updated since July 2006).
Transformers
thecybertronian Weekly newsletter covering everything to do with the various continuities of Transformers. Each week the fiction is separated out into its own post with an art and discussion post following soon after for easier reading.
Twilight
twilight_byte Weekly newsletter for the fandom based around Stephanie Meyer's Twilight novels featuring news, discussion, art and fic.
Veronica Mars
vm_navigator Daily comprehensive newsletter covering all the news, fic, art, discussion and anything else happening in Veronica Mars.
Weiss Kreuz
weiss_report Weekly newsletter covering all aspects of the Weiss Kruez fandom - a particularly useful feature on this one is the separation of new fics from WIPs that have been updated.
The West Wing
tww_full_lid Weekly round-up of all the West Wing news and activity.
Yami no Matsuei
gushoushinfiles Newsletter devoted to the YnM fandom (not updated since May 2006).