diff --git a/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.h b/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.h
--- a/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.h
+++ b/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.h
@@ -10,6 +10,7 @@
   const static std::string notificationsCryptoAccountID;
   const static std::string keyserverHostedNotificationsID;
   const static std::string initialEncryptedMessageContent;
+  const static int olmEncryptedTypeMessage;
 
   static void serializeAndFlushCryptoModule(
       crypto::CryptoModule &cryptoModule,
diff --git a/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.cpp b/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.cpp
--- a/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.cpp
+++ b/native/cpp/CommonCpp/Notifications/BackgroundDataStorage/NotificationsCryptoModule.cpp
@@ -23,6 +23,7 @@
     "keyserverHostedNotificationsID";
 const std::string NotificationsCryptoModule::initialEncryptedMessageContent =
     "{\"type\": \"init\"}";
+const NotificationsCryptoModule::olmEncryptedTypeMessage = 1;
 
 crypto::CryptoModule NotificationsCryptoModule::deserializeCryptoModule(
     const std::string &path,
diff --git a/native/ios/Comm.xcodeproj/project.pbxproj b/native/ios/Comm.xcodeproj/project.pbxproj
--- a/native/ios/Comm.xcodeproj/project.pbxproj
+++ b/native/ios/Comm.xcodeproj/project.pbxproj
@@ -58,6 +58,7 @@
 		CB38B48628771CDD00171182 /* TemporaryMessageStorage.mm in Sources */ = {isa = PBXBuildFile; fileRef = CB38B47F28771A3B00171182 /* TemporaryMessageStorage.mm */; };
 		CB38B48728771CE500171182 /* TemporaryMessageStorage.mm in Sources */ = {isa = PBXBuildFile; fileRef = CB38B47F28771A3B00171182 /* TemporaryMessageStorage.mm */; };
 		CB38F2B1286C6C870010535C /* MessageOperationsUtilities.cpp in Sources */ = {isa = PBXBuildFile; fileRef = CB38F2AF286C6C870010535C /* MessageOperationsUtilities.cpp */; };
+		CB3C0A3B2A125C8F009BD4DA /* NotificationsCryptoModule.cpp in Sources */ = {isa = PBXBuildFile; fileRef = CB24361729A39A2500FEC4E1 /* NotificationsCryptoModule.cpp */; };
 		CB3C621127CE4A320054F24C /* Logger.mm in Sources */ = {isa = PBXBuildFile; fileRef = 71CA4A63262DA8E500835C89 /* Logger.mm */; };
 		CB3C621227CE65030054F24C /* CommSecureStoreIOSWrapper.mm in Sources */ = {isa = PBXBuildFile; fileRef = 71142A7626C2650A0039DCBD /* CommSecureStoreIOSWrapper.mm */; };
 		CB4821A927CFB153001AB7E1 /* WorkerThread.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 718DE99C2653D41C00365824 /* WorkerThread.cpp */; };
@@ -1028,6 +1029,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				CB3C0A3B2A125C8F009BD4DA /* NotificationsCryptoModule.cpp in Sources */,
 				CB90951F29534B32002F2A7F /* CommSecureStore.mm in Sources */,
 				CB38B48728771CE500171182 /* TemporaryMessageStorage.mm in Sources */,
 				CB38B48528771CB800171182 /* EncryptedFileUtils.mm in Sources */,
diff --git a/native/ios/NotificationService/NotificationService.mm b/native/ios/NotificationService/NotificationService.mm
--- a/native/ios/NotificationService/NotificationService.mm
+++ b/native/ios/NotificationService/NotificationService.mm
@@ -1,8 +1,11 @@
 #import "NotificationService.h"
 #import "Logger.h"
+#import "NotificationsCryptoModule.h"
 #import "TemporaryMessageStorage.h"
 
 NSString *const backgroundNotificationTypeKey = @"backgroundNotifType";
+NSString *const messageInfosKey = @"messageInfos";
+const std::string callingProcessName = "NSE";
 // The context for this constant can be found here:
 // https://linear.app/comm/issue/ENG-3074#comment-bd2f5e28
 int64_t const notificationRemovalDelay = (int64_t)(0.1 * NSEC_PER_SEC);
@@ -26,6 +29,10 @@
   self.contentHandler = contentHandler;
   self.bestAttemptContent = [request.content mutableCopy];
 
+  if ([self shouldBeDecrypted:self.bestAttemptContent.userInfo]) {
+    [self decryptBestAttemptContent];
+  }
+
   [self persistMessagePayload:self.bestAttemptContent.userInfo];
   // Message payload persistence is a higher priority task, so it has
   // to happen prior to potential notification center clearing.
@@ -52,6 +59,16 @@
     // It is an extremely unlikely to happen.
     comm::Logger::log("NSE: Exceeded time limit to rescind a notification.");
     self.contentHandler([[UNNotificationContent alloc] init]);
+    return;
+  }
+  if ([self shouldBeDecrypted:self.bestAttemptContent.userInfo] &&
+      !self.bestAttemptContent.userInfo[@"succesfullyDecrypted"]) {
+    // If we get to this place it means we were unable to
+    // decrypt encrypted notification content in time
+    // given to NSE to process notification.
+    comm::Logger::log("NSE: Exceeded time limit to decrypt a notification.");
+    self.contentHandler([[UNNotificationContent alloc] init]);
+    return;
   }
   self.contentHandler(self.bestAttemptContent);
 }
@@ -85,10 +102,10 @@
 }
 
 - (void)persistMessagePayload:(NSDictionary *)payload {
-  if (payload[@"messageInfos"]) {
+  if (payload[messageInfosKey]) {
     TemporaryMessageStorage *temporaryStorage =
         [[TemporaryMessageStorage alloc] init];
-    [temporaryStorage writeMessage:payload[@"messageInfos"]];
+    [temporaryStorage writeMessage:payload[messageInfosKey]];
     return;
   }
 
@@ -131,4 +148,58 @@
       TRUE);
 }
 
+- (BOOL)shouldBeDecrypted:(NSDictionary *)payload {
+  return payload[@"encrypted"] &&
+      [payload[@"encrypted"] isEqualToString:@"true"];
+}
+
+- (void)decryptBestAttemptContent {
+  std::string encryptedBody =
+      std::string([self.bestAttemptContent.body UTF8String]);
+  NSString *decryptedBody =
+      [NSString stringWithUTF8String:(comm::NotificationsCryptoModule::decrypt(
+                                          encryptedBody, 1, callingProcessName))
+                                         .c_str()];
+  self.bestAttemptContent.body = decryptedBody;
+
+  std::string encryptedThreadID =
+      std::string([self.bestAttemptContent.threadIdentifier UTF8String]);
+  NSString *decryptedThreadID = [NSString
+      stringWithUTF8String:
+          (comm::NotificationsCryptoModule::decrypt(
+               encryptedThreadID,
+               comm::NotificationsCryptoModule::olmEncryptedTypeMessage,
+               "NSE"))
+              .c_str()];
+  self.bestAttemptContent.threadIdentifier = decryptedThreadID;
+
+  std::string encryptedBadge =
+      std::string([self.bestAttemptContent.userInfo[@"badge"] UTF8String]);
+  NSNumber *decryptedBadge = @([[NSString
+      stringWithUTF8String:
+          (comm::NotificationsCryptoModule::decrypt(
+               encryptedBadge,
+               comm::NotificationsCryptoModule::olmEncryptedTypeMessage,
+               callingProcessName))
+              .c_str()] intValue]);
+  self.bestAttemptContent.badge = decryptedBadge;
+
+  NSMutableDictionary *mutableUserInfo =
+      [self.bestAttemptContent.userInfo mutableCopy];
+
+  std::string encryptedMessageInfos =
+      std::string([mutableUserInfo[messageInfosKey] UTF8String]);
+  NSString *decryptedMessageInfos = [NSString
+      stringWithUTF8String:
+          (comm::NotificationsCryptoModule::decrypt(
+               encryptedMessageInfos,
+               comm::NotificationsCryptoModule::olmEncryptedTypeMessage,
+               callingProcessName))
+              .c_str()];
+  mutableUserInfo[messageInfosKey] = decryptedMessageInfos;
+
+  mutableUserInfo[@"succesfullyDecrypted"] = @(YES);
+  self.bestAttemptContent.userInfo = mutableUserInfo;
+}
+
 @end