From 07138d5445fbeec08989e663926951a487d71d77 Mon Sep 17 00:00:00 2001
From: Leland Kemble <70413276+lelandkemble@users.noreply.github.com>
Date: Tue, 24 Feb 2026 20:51:55 -0500
Subject: [PATCH] Adds some special case interactions with the mail
 counterfitter device  (#95180)

## About The Pull Request

Adds some type specific interactions to the mail produced by the GLA-2
mail counterfit device. Currently, it applies `attack_self()` to all
items when armed. The new interactions are, currently:

- Facehuggers jump on your face
- Flashes flash you
- Boxing gloves uppercut you
- Syringes prick you with poison
- Sprays spray you
- Signallers signal
- Monkey cubes/other cubes expand
- Guns shoot you in the head

There'll be more, probably. Leave your ideas(only good ones though).

## Why It's Good For The Game

First of all, none of these are strenuous from a balance perspective.
The primary use of this device is an instant bomb, and none of these
things are bombs. Easy delineation, I doubt this will become a problem.

As said already, the primary use of this device is a bomb. I've seen it
used for another thing once ever, and while that thing was incredibly
cool, the counterfit device is still a one-trick pony for the most part.
While none of these can compete with the lethality of the bomb, the hope
is that they will collectively help bring variety to an item that feels
built for variety.

## Changelog
:cl:

add: Several items have been given special interactions when placed
inside counterfit mail.

/:cl:
---
 code/__DEFINES/dcs/signals/signals_object.dm  |  4 ++
 code/game/objects/items/food/monkeycube.dm    | 10 +++++
 code/game/objects/items/mail.dm               | 40 +++++++++++--------
 code/modules/assembly/flash.dm                | 13 ++++++
 code/modules/assembly/signaler.dm             |  7 ++++
 code/modules/clothing/gloves/boxing.dm        | 15 +++++++
 .../living/carbon/alien/special/facehugger.dm |  9 +++++
 code/modules/projectiles/gun.dm               | 20 ++++++++++
 .../projectiles/guns/ballistic/bows/_bow.dm   |  1 +
 .../projectiles/guns/ballistic/revolver.dm    |  5 +++
 .../projectiles/guns/ballistic/rifle.dm       |  2 +-
 code/modules/projectiles/guns/magic.dm        |  1 +
 .../projectiles/guns/special/meat_hook.dm     |  3 ++
 .../projectiles/guns/special/medbeam.dm       |  3 ++
 .../projectiles/guns/special/syringe_gun.dm   |  1 +
 .../reagents/reagent_containers/spray.dm      | 11 +++++
 .../reagents/reagent_containers/syringes.dm   | 10 +++++
 code/modules/research/anomaly/anomaly_core.dm |  3 ++
 18 files changed, 140 insertions(+), 18 deletions(-)

diff --git a/code/__DEFINES/dcs/signals/signals_object.dm b/code/__DEFINES/dcs/signals/signals_object.dm
index 14ff38bf3d0..91c637a9492 100644
--- a/code/__DEFINES/dcs/signals/signals_object.dm
+++ b/code/__DEFINES/dcs/signals/signals_object.dm
@@ -647,3 +647,7 @@
 /// Sent from /obj/effect/rune/convert/try_sacrifice_item(obj/effect/rune/convert/rune)
 #define COMSIG_ITEM_CULT_SACRIFICE "item_cult_sacrifice"
 	#define COMPONENT_SACRIFICE_SUCCESSFUL (1<<0)
+
+/// Sent from /obj/item/mail/traitor/after_unwrap(mob/user, obj/item/mail/traitor/letter)
+#define COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL "traitor_mail_opened"
+	#define COMPONENT_TRAITOR_MAIL_HANDLED (1<<0)
diff --git a/code/game/objects/items/food/monkeycube.dm b/code/game/objects/items/food/monkeycube.dm
index a6554230f25..fcce5eb9f0a 100644
--- a/code/game/objects/items/food/monkeycube.dm
+++ b/code/game/objects/items/food/monkeycube.dm
@@ -13,6 +13,10 @@
 	/// Whether we've been wetted and are expanding
 	var/expanding = FALSE
 
+/obj/item/food/monkeycube/Initialize(mapload)
+	. = ..()
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
+
 /obj/item/food/monkeycube/attempt_pickup(mob/user)
 	if(expanding)
 		return FALSE
@@ -77,6 +81,12 @@
 	user.visible_message(span_danger("[user]'s torso bursts open as a primate emerges!"))
 	user.gib(DROP_BRAIN|DROP_BODYPARTS|DROP_ITEMS) // just remove the organs
 
+/obj/item/food/monkeycube/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	to_chat(user, span_danger("As you open [letter], its contents rapidly expand!"))
+	Expand()
+	return COMPONENT_TRAITOR_MAIL_HANDLED
+
 /obj/item/food/monkeycube/syndicate
 	faction = list(FACTION_NEUTRAL, ROLE_SYNDICATE)
 
diff --git a/code/game/objects/items/mail.dm b/code/game/objects/items/mail.dm
index 02368f80e75..bebc7b4ceab 100644
--- a/code/game/objects/items/mail.dm
+++ b/code/game/objects/items/mail.dm
@@ -400,10 +400,18 @@
 	user.temporarilyRemoveItemFromInventory(src, force = TRUE)
 	playsound(loc, 'sound/items/poster/poster_ripped.ogg', vol = 50, vary = TRUE)
 	for(var/obj/item/stuff as anything in contents) // Mail and envelope actually can have more than 1 item.
-		if(user.put_in_hands(stuff) && armed)
-			var/whomst = made_by_cached_name ? "[made_by_cached_name] ([made_by_cached_ckey])" : "no one in particular"
-			log_bomber(user, "opened armed mail made by [whomst], activating", stuff)
-			INVOKE_ASYNC(stuff, TYPE_PROC_REF(/obj/item, attack_self), user)
+		if(!armed)
+			continue
+		var/whomst = made_by_cached_name ? "[made_by_cached_name] ([made_by_cached_ckey])" : "no one in particular"
+		log_bomber(user, "opened armed mail made by [whomst], activating", stuff)
+
+		if(SEND_SIGNAL(stuff, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, user, src) & COMPONENT_TRAITOR_MAIL_HANDLED)
+			continue
+
+		if(!user.put_in_hands(stuff))
+			continue
+
+		INVOKE_ASYNC(stuff, TYPE_PROC_REF(/obj/item, attack_self), user)
 	qdel(src)
 	return TRUE
 
@@ -418,20 +426,18 @@
 		playsound(src, 'sound/machines/defib/defib_ready.ogg', vol = 100, vary = TRUE)
 		armed = FALSE
 		return TRUE
-	else
-		balloon_alert(user, "tinkering with something...")
+	balloon_alert(user, "tinkering with something...")
 
-		if(!do_after(user, 2 SECONDS, target = src))
-			after_unwrap(user)
-			return FALSE
-		if(prob(50))
-			balloon_alert(user, "disarmed something...?")
-			playsound(src, 'sound/machines/defib/defib_ready.ogg', vol = 100, vary = TRUE)
-			armed = FALSE
-			return TRUE
-		else
-			after_unwrap(user)
-			return TRUE
+	if(!do_after(user, 2 SECONDS, target = src))
+		after_unwrap(user)
+		return FALSE
+	if(prob(50))
+		balloon_alert(user, "disarmed something...?")
+		playsound(src, 'sound/machines/defib/defib_ready.ogg', vol = 100, vary = TRUE)
+		armed = FALSE
+		return TRUE
+	after_unwrap(user)
+	return TRUE
 
 ///Generic mail used in the mail strike shuttle loan event
 /obj/item/mail/mail_strike
diff --git a/code/modules/assembly/flash.dm b/code/modules/assembly/flash.dm
index c1df928d8b6..dfb5c628a68 100644
--- a/code/modules/assembly/flash.dm
+++ b/code/modules/assembly/flash.dm
@@ -28,6 +28,10 @@
 	var/cooldown = 0
 	var/last_trigger = 0 //Last time it was successfully triggered.
 
+/obj/item/assembly/flash/Initialize(mapload)
+	. = ..()
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
+
 /obj/item/assembly/flash/suicide_act(mob/living/user)
 	if(burnt_out)
 		user.visible_message(span_suicide("[user] raises \the [src] up to [user.p_their()] eyes and activates it ... but it's burnt out!"))
@@ -265,6 +269,15 @@
 	// Attacker lateral to the victim.
 	return DEVIATION_PARTIAL
 
+/obj/item/assembly/flash/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	if(!try_use_flash())
+		return NONE
+	to_chat(user, span_danger("As you open [letter], a very bright light shoots out from inside!"))
+	flash_mob(user)
+	forceMove(user.loc)
+	return COMPONENT_TRAITOR_MAIL_HANDLED
+
 /obj/item/assembly/flash/attack(mob/living/target, mob/user)
 	if(!try_use_flash(user))
 		return FALSE
diff --git a/code/modules/assembly/signaler.dm b/code/modules/assembly/signaler.dm
index 0c122e7c851..0e4712288ee 100644
--- a/code/modules/assembly/signaler.dm
+++ b/code/modules/assembly/signaler.dm
@@ -53,6 +53,7 @@
 /obj/item/assembly/signaler/Initialize(mapload)
 	. = ..()
 	set_frequency(frequency)
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
 
 /obj/item/assembly/signaler/Destroy()
 	SSradio.remove_object(src,frequency)
@@ -181,6 +182,12 @@
 	radio_connection = SSradio.add_object(src, frequency, RADIO_SIGNALER)
 	return
 
+/obj/item/assembly/signaler/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	to_chat(user, span_danger("As you open [letter], you accidentally press a button on [src]!"))
+	INVOKE_ASYNC(src, PROC_REF(signal)) // No need to check for cooldown, the cooldown is shorter than the do_after for opening mail
+	return NONE //don't return handled, we want in hands and open ui
+
 /obj/item/assembly/signaler/cyborg
 
 /obj/item/assembly/signaler/cyborg/attackby(obj/item/W, mob/user, list/modifiers, list/attack_modifiers)
diff --git a/code/modules/clothing/gloves/boxing.dm b/code/modules/clothing/gloves/boxing.dm
index 9b3c54b901d..60f097eddaa 100644
--- a/code/modules/clothing/gloves/boxing.dm
+++ b/code/modules/clothing/gloves/boxing.dm
@@ -9,6 +9,8 @@
 	equip_sound = 'sound/items/equip/glove_equip.ogg'
 	/// Determines the version of boxing (or any martial art for that matter) that the boxing gloves gives
 	var/style_to_give = /datum/martial_art/boxing
+	/// Specifically for whether they get longer knockdown when they jump out of traitor mail
+	var/extrapower = FALSE
 
 /obj/item/clothing/gloves/boxing/Initialize(mapload)
 	. = ..()
@@ -21,12 +23,24 @@
 
 	AddComponent(/datum/component/martial_art_giver, style_to_give)
 	AddElement(/datum/element/adjust_fishing_difficulty, 19)
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
+
+/obj/item/clothing/gloves/boxing/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	to_chat(user, span_danger("As you open [letter], boxing gloves spring out and deliver you a swift uppercut!"))
+	var/mob/living/userasliving = user
+	playsound(user, SFX_PUNCH, 25, TRUE)
+	userasliving.Knockdown((extrapower ? 2 : 4) SECONDS, (extrapower ? 4 : 6) SECONDS)
+	userasliving.adjust_stamina_loss(extrapower ? 40 : 80)
+	forceMove(user.loc)
+	return COMPONENT_TRAITOR_MAIL_HANDLED
 
 /obj/item/clothing/gloves/boxing/evil
 	name = "evil boxing gloves"
 	desc = "These strange gloves radiate an unusually evil aura."
 	greyscale_colors = "#21211f"
 	style_to_give = /datum/martial_art/boxing/evil
+	extrapower = TRUE
 
 /obj/item/clothing/gloves/boxing/green
 	icon_state = "boxinggreen"
@@ -48,6 +62,7 @@
 	material_flags = MATERIAL_EFFECTS | MATERIAL_AFFECT_STATISTICS
 	equip_delay_other = 12 SECONDS
 	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE
+	extrapower = TRUE
 
 /obj/item/clothing/gloves/boxing/golden/Initialize(mapload)
 	. = ..()
diff --git a/code/modules/mob/living/carbon/alien/special/facehugger.dm b/code/modules/mob/living/carbon/alien/special/facehugger.dm
index 4e4a616a005..b06e9ab1fbc 100644
--- a/code/modules/mob/living/carbon/alien/special/facehugger.dm
+++ b/code/modules/mob/living/carbon/alien/special/facehugger.dm
@@ -43,6 +43,7 @@
 	AddElement(/datum/element/muffles_speech)
 
 	RegisterSignal(src, COMSIG_LIVING_TRYING_TO_PULL, PROC_REF(react_to_mob))
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
 
 /obj/item/clothing/mask/facehugger/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, attack_dir)
 	..()
@@ -294,6 +295,14 @@
 		return TRUE
 	return FALSE
 
+/obj/item/clothing/mask/facehugger/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	if(stat != CONSCIOUS)
+		return NONE
+	to_chat(user, span_danger("There's something moving inside of \the [letter]!"))
+	Leap(user)
+	return COMPONENT_TRAITOR_MAIL_HANDLED
+
 /obj/item/clothing/mask/facehugger/lamarr
 	name = "Lamarr"
 	desc = "The Research Director's pet, a domesticated and debeaked xenomorph facehugger. Friendly, but may still try to couple with your head."
diff --git a/code/modules/projectiles/gun.dm b/code/modules/projectiles/gun.dm
index d998760b601..0f93174325c 100644
--- a/code/modules/projectiles/gun.dm
+++ b/code/modules/projectiles/gun.dm
@@ -110,6 +110,9 @@
 
 	var/pb_knockback = 0
 
+	/// What this gun says when it's gonna shoot inside mail.
+	var/about_to_shoot_inside_mail_text = "Its trigger is already pulled!"
+
 	/// Cooldown for the visible message sent from gun flipping.
 	COOLDOWN_DECLARE(flip_cooldown)
 
@@ -121,6 +124,7 @@
 
 	add_seclight_point()
 	add_bayonet_point()
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
 
 /obj/item/gun/Destroy()
 	if(isobj(pin)) //Can still be the initial path, then we skip
@@ -713,5 +717,21 @@
 /obj/item/gun/proc/before_firing(atom/target,mob/user)
 	return
 
+/obj/item/gun/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	INVOKE_ASYNC(src, PROC_REF(fire_at_opener), user, letter)
+	return COMPONENT_TRAITOR_MAIL_HANDLED
+
+/obj/item/gun/proc/fire_at_opener(mob/user, obj/item/mail/traitor/letter)
+	if(!user.put_in_hands(src)) //this won't ever fail under normal circumstances, but will happen with the admin versions
+		forceMove(user.loc)
+	to_chat(user, span_danger("As you open [letter], you see [src] inside! [about_to_shoot_inside_mail_text]"))
+	if(!can_shoot())
+		shoot_with_empty_chamber(user)
+		return
+	if(process_fire(user, user, FALSE, zone_override = BODY_ZONE_HEAD))
+		forceMove(user.loc)
+		throw_at(pick(get_step(user, user.dir)), 1, 3)
+
 #undef FIRING_PIN_REMOVAL_DELAY
 #undef DUALWIELD_PENALTY_EXTRA_MULTIPLIER
diff --git a/code/modules/projectiles/guns/ballistic/bows/_bow.dm b/code/modules/projectiles/guns/ballistic/bows/_bow.dm
index 69399c71138..fa14d0df3d6 100644
--- a/code/modules/projectiles/guns/ballistic/bows/_bow.dm
+++ b/code/modules/projectiles/guns/ballistic/bows/_bow.dm
@@ -23,6 +23,7 @@
 	click_on_low_ammo = FALSE
 	must_hold_to_load = TRUE
 	trigger_guard = TRIGGER_GUARD_ALLOW_ALL
+	about_to_shoot_inside_mail_text = "Its bowstring is pulled back!"
 	/// whether the bow is drawn back
 	var/drawn = FALSE
 
diff --git a/code/modules/projectiles/guns/ballistic/revolver.dm b/code/modules/projectiles/guns/ballistic/revolver.dm
index ac7abb4c024..444d726dac9 100644
--- a/code/modules/projectiles/guns/ballistic/revolver.dm
+++ b/code/modules/projectiles/guns/ballistic/revolver.dm
@@ -369,6 +369,11 @@
 	shoot_self(user, check_zone(user.zone_selected))
 	return .
 
+/obj/item/gun/ballistic/revolver/russian/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	if((get_ammo(FALSE, FALSE) > 1) || (get_ammo(TRUE, TRUE) < 6))
+		return NONE
+	return ..()
+
 /// Called after successfully(if you can call it that) shooting ourselves
 /obj/item/gun/ballistic/revolver/russian/proc/shoot_self(mob/living/carbon/human/user, affecting = BODY_ZONE_HEAD)
 	user.add_mood_event(
diff --git a/code/modules/projectiles/guns/ballistic/rifle.dm b/code/modules/projectiles/guns/ballistic/rifle.dm
index db6567e2767..770992e4dff 100644
--- a/code/modules/projectiles/guns/ballistic/rifle.dm
+++ b/code/modules/projectiles/guns/ballistic/rifle.dm
@@ -98,7 +98,7 @@
 			return FALSE
 	return ..()
 
-/obj/item/gun/ballistic/rifle/boltaction/process_fire(mob/user)
+/obj/item/gun/ballistic/rifle/boltaction/process_fire(atom/target, mob/living/user, message, params, zone_override, bonus_spread)
 	if(can_jam)
 		if(chambered.loaded_projectile)
 			if(prob(jamming_chance))
diff --git a/code/modules/projectiles/guns/magic.dm b/code/modules/projectiles/guns/magic.dm
index cceeb6b547b..2119b904e92 100644
--- a/code/modules/projectiles/guns/magic.dm
+++ b/code/modules/projectiles/guns/magic.dm
@@ -13,6 +13,7 @@
 	clumsy_check = FALSE
 	trigger_guard = TRIGGER_GUARD_ALLOW_ALL // Has no trigger at all, uses magic instead
 	pin = /obj/item/firing_pin/magic
+	about_to_shoot_inside_mail_text = "It's humming with energy!"
 	/// If true, our fire sound gets lower as our charges decrease
 	var/pitch_with_charges = TRUE
 	/// What kind of magic is this
diff --git a/code/modules/projectiles/guns/special/meat_hook.dm b/code/modules/projectiles/guns/special/meat_hook.dm
index 302ebb435cf..35183e65b0f 100644
--- a/code/modules/projectiles/guns/special/meat_hook.dm
+++ b/code/modules/projectiles/guns/special/meat_hook.dm
@@ -42,6 +42,9 @@
 	removable.dismember(silent = FALSE)
 	return BRUTELOSS
 
+/obj/item/gun/magic/hook/on_mail_unwrap(mob/user, obj/item/mail/traitor/letter)
+	return NONE
+
 /obj/item/ammo_casing/magic/hook
 	name = "hook"
 	desc = "A hook."
diff --git a/code/modules/projectiles/guns/special/medbeam.dm b/code/modules/projectiles/guns/special/medbeam.dm
index 45c9de8e186..290da403b83 100644
--- a/code/modules/projectiles/guns/special/medbeam.dm
+++ b/code/modules/projectiles/guns/special/medbeam.dm
@@ -93,6 +93,9 @@
 	if(current_target)
 		on_beam_tick(current_target)
 
+/obj/item/gun/medbeam/on_mail_unwrap(mob/user, obj/item/mail/traitor/letter)
+	return NONE
+
 /obj/item/gun/medbeam/proc/mid_los_check(atom/movable/user, mob/target, pass_args = PASSTABLE|PASSGLASS|PASSGRILLE, turf/next_step, obj/dummy)
 	for(var/obj/effect/ebeam/medical/B in next_step)// Don't cross the str-beams!
 		if(QDELETED(current_beam))
diff --git a/code/modules/projectiles/guns/special/syringe_gun.dm b/code/modules/projectiles/guns/special/syringe_gun.dm
index e17e9bb43ea..ca79d6d9800 100644
--- a/code/modules/projectiles/guns/special/syringe_gun.dm
+++ b/code/modules/projectiles/guns/special/syringe_gun.dm
@@ -225,6 +225,7 @@
 	force = 4
 	trigger_guard = TRIGGER_GUARD_ALLOW_ALL
 	custom_materials = list(/datum/material/bamboo = SHEET_MATERIAL_AMOUNT * 10)
+	about_to_shoot_inside_mail_text = "The air in the envelope is rushing out!"
 
 /obj/item/gun/syringe/blowgun/process_fire(atom/target, mob/living/user, message = TRUE, params = null, zone_override = "", bonus_spread = 0)
 	. = ..()
diff --git a/code/modules/reagents/reagent_containers/spray.dm b/code/modules/reagents/reagent_containers/spray.dm
index 2aba2fd1c11..e2a849e650e 100644
--- a/code/modules/reagents/reagent_containers/spray.dm
+++ b/code/modules/reagents/reagent_containers/spray.dm
@@ -30,6 +30,7 @@
 /obj/item/reagent_containers/spray/Initialize(mapload, vol)
 	. = ..()
 	AddElement(/datum/element/reagents_item_heatable)
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
 
 /obj/item/reagent_containers/spray/ranged_interact_with_atom(atom/interacting_with, mob/living/user, list/modifiers)
 	return try_spray(interacting_with, user) ? ITEM_INTERACT_SUCCESS : ITEM_INTERACT_BLOCKING
@@ -150,6 +151,16 @@
 		log_combat(usr, usr.loc, "emptied onto", src, addition="which had [reagents.get_reagent_log_string()]")
 		src.reagents.clear_reagents()
 
+/obj/item/reagent_containers/spray/proc/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	if(reagents.total_volume < amount_per_transfer_from_this)
+		return
+	to_chat(user, span_danger("As you open [letter], a mist spritzes out from inside!"))
+	spray(user, user)
+	playsound(user, spray_sound, 50, TRUE, -6)
+	forceMove(user.loc)
+	return COMPONENT_TRAITOR_MAIL_HANDLED
+
 /// Handles updating the spray distance when the reagents change.
 /obj/item/reagent_containers/spray/on_reagent_change(datum/reagents/holder, ...)
 	. = ..()
diff --git a/code/modules/reagents/reagent_containers/syringes.dm b/code/modules/reagents/reagent_containers/syringes.dm
index e32b60e9a2b..4136687774e 100644
--- a/code/modules/reagents/reagent_containers/syringes.dm
+++ b/code/modules/reagents/reagent_containers/syringes.dm
@@ -33,6 +33,7 @@
 		dart_insert_projectile_icon_state, \
 		CALLBACK(src, PROC_REF(get_dart_var_modifiers))\
 	)
+	RegisterSignal(src, COMSIG_ITEM_IN_UNWRAPPED_TRAITOR_MAIL, PROC_REF(on_mail_unwrap))
 
 /obj/item/reagent_containers/syringe/proc/try_syringe(atom/target, mob/user)
 	if(!target.reagents)
@@ -193,6 +194,15 @@
 		"demolition_mod" = demolition_mod,
 	)
 
+/obj/item/reagent_containers/syringe/proc/on_mail_unwrap(atom/source, mob/living/user, obj/item/mail/traitor/letter)
+	SIGNAL_HANDLER
+	if(!reagents.total_volume || !user.reagents || !user.try_inject(user, user.get_active_hand()))
+		return
+	to_chat(user, span_danger("As you open [letter], you prick yourself on a syringe inside!"))
+	reagents.trans_to(user, min(reagents.total_volume, 5))
+	forceMove(user.loc)
+	return COMPONENT_TRAITOR_MAIL_HANDLED
+
 /datum/embedding/syringe
 	embed_chance = 85
 	fall_chance = 2
diff --git a/code/modules/research/anomaly/anomaly_core.dm b/code/modules/research/anomaly/anomaly_core.dm
index 78e37bb9cf0..970673019ac 100644
--- a/code/modules/research/anomaly/anomaly_core.dm
+++ b/code/modules/research/anomaly/anomaly_core.dm
@@ -36,6 +36,9 @@
 		to_chat(user, span_notice("Analyzing... [src]'s stabilized field is fluctuating along frequency [format_frequency(frequency)], code [code]."))
 	return ..()
 
+/obj/item/assembly/signaler/anomaly/on_mail_unwrap(atom/source, mob/user, obj/item/mail/traitor/letter)
+	return NONE
+
 //Anomaly cores
 /obj/item/assembly/signaler/anomaly/pyro
 	name = "\improper pyroclastic anomaly core"