Hey all,
This is the first official list of all the latest DL pages to get mods for Postal 2 and the expansion + sum mutators.
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http://www.moddb.com/mods/awp-a-week-in-paradise
AWP = A Week in Paradise
This mod basically just takes the expansion and mixes it with the original Postal 2 so you get all the physix and the dismemberment and weapons and what not.
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http://www.moddb.com/mods/eternal-damnation
ED = Eternal Damnation
This mod is crazy scary for Postal 2. I have not completed it as I have done just the beginning. But how it is made is amazing. There is a remake for it being worked on currently. No clue when to expect the remake to be out.
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http://www.moddb.com/mods/a-very-postal-christmas
AVPC = A Very Postal Christmas
This is basically just Postal 2 but in a Christmas setting and well it isnt exaclty Paradise you play at but a new area...I never really played this so kinda hard to say more...
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http://www.postalnetwork.org/dirtyperv
Dirty Perv Mod
This is for those that cant stop looking at chix pussy cats as they lay on the ground lifeless.
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http://www.postalnetwork.org/files/file.shtml?ID=317
Postal 2 Apocolypse Weekend Nudes
This makes the zombie chix nude.
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http://www.postalnetwork.org/files/file.shtml?ID=165
Nude Skins
This makes every chick in Postal 2 or the expansion(except zombies) nude.
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http://www.postalnetwork.org/files/file.shtml?ID=234
Map Shuffle v2.0
This mutator will make server change randomly between maps.
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http://www.resurrection-studios.com/jonm/postal2mods/multiplayer/p2STP-AirMail3-142a.rar
Air Mail 3 v1.42a
This is basically Rune Mod from Quake but has been adapted for Postal 2 gameplay online.
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http://www.resurrection-studios.com/madjackal/MaDWorkx/P2M@DHeAdZChars_1.0.zip
M@DHeAdZCharacters
This makes it so your server will play and give players more characters to play as.
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http://www.resurrection-studios.com/jonm/postal2mods/multiplayer/p2STP-AdminToolPack.rar
AW Weapons
Adds the machete and sledgehammer from AW to POSTAL 2 multiplayer. Machete replaces your baton, and the sledge replaces the shovel pick up.
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http://www.resurrection-studios.com/jonm/postal2mods/multiplayer/p2STP-SuperWeapons.rar
Super weapons
Adds five new weapons to P2STP Multiplayer!.Fixes the napalm and pledge weapons to work in mp, and adds three new weapons: grenade launcher, the holy hand grenade and the nuke launcher.
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http://www.resurrection-studios.com/madjackal/MaDWorkx/P2M@DMods_1.0.zip
M@DMODS
A load of new weapons for P2 mulitplayer! Also new gametype ‘M@D Arena’. Many of these weapons are now in AWP: Syringes Bong, Beer, Speed, Chemical Drugs, Laboratory Syringes, Silenced Sniper, Bomb, Silenced Ingram, Shotgun, Silenced Pistol, Colt Peacemaker, Spiked Baseball Bat, Mace, War Hammer Katana, Shurikens, Caltrops, Kung Fu Sword, Butcher Knife, Machete M@D Inc. Shield, Barbarian Axe
---Stixsmaster

I take issue with the Christmas one, because Postal 2's setting is Paradise Arizona, it never snows there, litterally, I've been there.

well it isnt really just Postal 2 in Christmas Format...but instead of being in Paradise it is in a different area...
I ment it basically as in gameplay and what not was Postal 2 stuff...just in Christmas setting...but it has a completely diff story line and what not...
---Stixsmaster
P.S. editing that to be more clear

Wow, thanks for the "A very Postal Christmas" mod, I've never heard about it before and it sure looks nice. It's even included in the 10th anniversary Edition of Postal, so it must be a pretty good mod. (I hope so, atleast)

AWP and Eternal Damnation are must play. Even if the second is very linear, the zombie shooting is still fun. For A Very Postal Christmas, I will play it asap because I have waited for long this mod, before that my original copy of P² get lost.

are there any alternate links for the mods from postalnetwork.com?
that site doesnt seem to exist any more.

1409X patch has been released, incorporates most (all?) of these mods, MP stuff and more. :)
Details here.

Download the patch 1409X from The Patches Scrolls
List of changes in 1409X
Patch 1409X contains all of the following Postal 2 mods, with many improvements, additions and updates.
Xadmin 202
Zounds
Zeroping
X characters
AW weapons
Holy Wars Gametype (now known as Jihad)
Arena Gametype
King of the Hill Gametype
STPExtras And STPExtrastoo (editor tools)
Also minor mods like No rockets/shovel fight can all be done within 1409X. These mods are are no longer needed and are now obsolete. Don’t try and run any of these mods with 1409X. If you have maps that have AW weapons or something else from the above built into them, you should remake them with the 1409X versions (Any Map using features from 1409X should have the [X] tag on the end).

Want More Mods? GO HERE
The above sticky is only a small handful of mods compared to what is available.
This page at Postal Network has tons more mods for Both Single Player and Multi-Player modes and mods for the Expansion Pack also:
http://www.postalnetwork.org/files/index.shtml?ID=5
Look on the left hand side of the screen and you will find TONS of mods listed and sorted by category. .
Attention: There are 2 single player sections !
You will see listed "Postal 2 STP - (Single Player Mods)" and under it just, "Postal 2 - (Mods)"
The dfference is the "Postal STP" version included Multiplayer and the "Postal 2" version did not.
For the single player game fans can use single player mods from both sections because the GOG version includes Multiplayer.
3 pages of mods for Single Player alone just in the "Postal 2" section !!
For each section there are even add on Single Player Maps !! A rare find in any single player game!
If you have an older copy of the game that is single player only, the Postal STP version single player mods may not work as they may require added files from the version of the game with both single player and multi player built in.
After that, Postal 2 fans can find the awesome Total Conversion,
Lost Island Mod here:
http://www.strategyinformer.com/pc/postal2/mod/28794.html
All together this is more Postal Fun than you could have ever dreamed!

How do I get the mods to work after I download and install them?

Well, I was able to download the AWP Mod and the Lost Island mod. However, after attempting to install them both files were said to be corrupted. Any idea what's going on? I'd really like to get that AWP Mod to work.

Link to the Christmas Mod. The Moddb one is gone.

Edit: Nevermind, this one doesn't seem to work either. Anyone have a link to it?

A Very Postal Christmas can be found here:

http://en.postalsite.info/infusions/pro_download_panel/download.php?did=109

Currently looking for anything else I can find.
Nude skin pack:

http://www.gamefront.com/files/1762625/Postal_2_Nude_Skin_Pack

Postal 2 AWP (A week in Paradise) should be beeing mentioned on gog´s Postal 2 page.
It´s a proven worthy mod for Postal 2 and makes it even better.

Just want to chip in and say that gamefront has a lot of Postal 2 mods.

http://www.gamefront.com/games/postal-2