diff --git a/src/status_im/protocol/handlers.cljs b/src/status_im/protocol/handlers.cljs
index e80ef96f2c..ebb0e7b525 100644
--- a/src/status_im/protocol/handlers.cljs
+++ b/src/status_im/protocol/handlers.cljs
@@ -3,7 +3,6 @@
             [re-frame.core :as re-frame]
             [status-im.constants :as constants]
             [status-im.native-module.core :as status]
-            [status-im.transport.message-cache :as message-cache]
             [status-im.utils.datetime :as datetime]
             [status-im.utils.ethereum.core :as utils]
             [status-im.utils.handlers :as handlers]
diff --git a/src/status_im/transport/message/v1/contact.cljs b/src/status_im/transport/message/v1/contact.cljs
index 530cca414b..52ea8dbc90 100644
--- a/src/status_im/transport/message/v1/contact.cljs
+++ b/src/status_im/transport/message/v1/contact.cljs
@@ -30,8 +30,7 @@
 (defrecord ContactRequest [name profile-image address fcm-token]
   message/StatusMessage
   (send [this chat-id {:keys [db random-id] :as cofx}]
-    (let [message-id (transport.utils/message-id this)
-          topic      (transport.utils/get-topic random-id)
+    (let [topic      (transport.utils/get-topic random-id)
           on-success (fn [sym-key sym-key-id]
                        (re-frame/dispatch [:contact/send-new-sym-key
                                            {:sym-key-id sym-key-id
@@ -42,46 +41,34 @@
       (handlers-macro/merge-fx cofx
                                {:shh/get-new-sym-key {:web3       (:web3 db)
                                                       :on-success on-success}}
-                               (protocol/init-chat chat-id topic)
-                               #_(protocol/requires-ack message-id chat-id))))
+                               (protocol/init-chat chat-id topic))))
   (receive [this chat-id signature {:keys [db] :as cofx}]
-    (let [message-id (transport.utils/message-id this)
-          topic      (transport.utils/get-topic chat-id)]
-      (when (protocol/is-new? message-id)
-        (handlers-macro/merge-fx cofx
-                                 #_(protocol/ack message-id chat-id)
-                                 {:dispatch [:inbox/request-messages {:topics [topic]}]}
-                                 (contacts/receive-contact-request signature
-                                                                   this))))))
+    (let [topic      (transport.utils/get-topic chat-id)]
+      (handlers-macro/merge-fx cofx
+                               {:dispatch [:inbox/request-messages {:topics [topic]}]}
+                               (contacts/receive-contact-request signature
+                                                                 this)))))
 
 (defrecord ContactRequestConfirmed [name profile-image address fcm-token]
   message/StatusMessage
   (send [this chat-id cofx]
-    (let [message-id (transport.utils/message-id this)]
-      (handlers-macro/merge-fx cofx
-                               #_(protocol/requires-ack message-id chat-id)
-                               (protocol/send {:chat-id chat-id
-                                               :payload this}))))
+    (handlers-macro/merge-fx cofx
+                             (protocol/send {:chat-id chat-id
+                                             :payload this})))
   (receive [this chat-id signature cofx]
-    (let [message-id (transport.utils/message-id this)]
-      (when (protocol/is-new? message-id)
-        (handlers-macro/merge-fx cofx
-                                 #_(protocol/ack message-id chat-id)
-                                 (contacts/receive-contact-request-confirmation signature
-                                                                                this))))))
+    (handlers-macro/merge-fx cofx
+                             (contacts/receive-contact-request-confirmation signature
+                                                                            this))))
 
 (defrecord ContactUpdate [name profile-image]
   message/StatusMessage
   (send [this _ {:keys [db] :as cofx}]
-    (let [message-id (transport.utils/message-id this)
-          public-keys (remove nil? (map :public-key (vals (:contacts/contacts db))))]
+    (let [public-keys (remove nil? (map :public-key (vals (:contacts/contacts db))))]
       (handlers-macro/merge-fx cofx
                                (protocol/multi-send-by-pubkey {:public-keys public-keys
                                                                :payload     this}))))
   (receive [this chat-id signature cofx]
-    (let [message-id (transport.utils/message-id this)]
-      (when (protocol/is-new? message-id)
-        (handlers-macro/merge-fx cofx
-                                 (contacts/receive-contact-update chat-id
-                                                                  signature
-                                                                  this))))))
+    (handlers-macro/merge-fx cofx
+                             (contacts/receive-contact-update chat-id
+                                                              signature
+                                                              this))))
diff --git a/src/status_im/transport/message/v1/protocol.cljs b/src/status_im/transport/message/v1/protocol.cljs
index baacc8f624..ae62466e26 100644
--- a/src/status_im/transport/message/v1/protocol.cljs
+++ b/src/status_im/transport/message/v1/protocol.cljs
@@ -3,7 +3,6 @@
   (:require [status-im.utils.config :as config]
             [status-im.constants :as constants]
             [status-im.chat.core :as chat]
-            [status-im.transport.message-cache :as message-cache]
             [status-im.transport.db :as transport.db]
             [status-im.transport.message.core :as message]
             [status-im.transport.utils :as transport.utils]))
@@ -22,12 +21,6 @@
   ([chat-id topic {:keys [db] :as cofx}]
    {:db (assoc-in db [:transport/chats chat-id] (transport.db/create-chat topic))}))
 
-(defn is-new?
-  "Determines if given message-id already exists in in-memory message cache"
-  [message-id]
-  (when-not (message-cache/exists? message-id)
-    (message-cache/add! message-id)))
-
 #_(defn requires-ack [message-id chat-id {:keys [db] :as cofx}]
     {:db (update-in db [:transport/chats chat-id :pending-ack] conj message-id)})
 
diff --git a/src/status_im/transport/message_cache.cljs b/src/status_im/transport/message_cache.cljs
deleted file mode 100644
index 48b12f0def..0000000000
--- a/src/status_im/transport/message_cache.cljs
+++ /dev/null
@@ -1,19 +0,0 @@
-(ns ^{:doc "Message caching API for message deduplication"}
- status-im.transport.message-cache
-  (:refer-clojure :exclude [exists?]))
-
-(defonce messages-set (atom #{}))
-
-(defn init!
-  [messages]
-  (reset! messages-set (set (map :message-id messages))))
-
-(defn add!
-  [message-id]
-  (when message-id
-    (swap! messages-set conj message-id)))
-
-(defn exists?
-  [message-id]
-  (when message-id
-    (@messages-set message-id)))