diff --git a/lib/Chat/ChatManager.php b/lib/Chat/ChatManager.php
index 8cfdb12fd075..427937fa7449 100644
--- a/lib/Chat/ChatManager.php
+++ b/lib/Chat/ChatManager.php
@@ -76,7 +76,11 @@ public function sendMessage(Room $chat, $actorType, $actorId, $message, \DateTim
 
 		$this->commentsManager->save($comment);
 
-		$this->notifier->notifyMentionedUsers($chat, $comment);
+		if ($chat->getType() === Room::ONE_TO_ONE_CALL) {
+			$this->notifier->notifyOtherParticipant($chat, $comment);
+		} else {
+			$this->notifier->notifyMentionedUsers($chat, $comment);
+		}
 		return $comment;
 	}
 
diff --git a/lib/Chat/Notifier.php b/lib/Chat/Notifier.php
index bf33246317a1..9118483e93f7 100644
--- a/lib/Chat/Notifier.php
+++ b/lib/Chat/Notifier.php
@@ -26,6 +26,7 @@
 use OCA\Spreed\Exceptions\ParticipantNotFoundException;
 use OCA\Spreed\Exceptions\RoomNotFoundException;
 use OCA\Spreed\Manager;
+use OCA\Spreed\Participant;
 use OCA\Spreed\Room;
 use OCP\Comments\IComment;
 use OCP\Notification\IManager as INotificationManager;
@@ -90,6 +91,53 @@ public function notifyMentionedUsers(Room $chat, IComment $comment) {
 		}
 	}
 
+	/**
+	 * Notifies the user mentioned in the comment.
+	 *
+	 * The comment must be a chat message comment. That is, its "objectId" must
+	 * be the room ID.
+	 *
+	 * Not every user mentioned in the message is notified, but only those that
+	 * are able to participate in the room.
+	 *
+	 * @param Room $chat
+	 * @param IComment $comment
+	 */
+	public function notifyOtherParticipant(Room $chat, IComment $comment) {
+		$participants = $chat->getParticipants();
+
+		foreach ($participants['users'] as $userId => $participant) {
+			if ($userId === $comment->getActorId()) {
+				// Do not notify the author
+				continue;
+			}
+
+			if ($participant['sessionId'] && $participant['sessionId'] !== '0') {
+				// User is online
+				continue;
+			}
+
+			$notification = $this->notificationManager->createNotification();
+			$notification
+				->setApp('spreed')
+				->setObject('chat', $chat->getToken())
+				->setUser($userId)
+				->setSubject('chat', [
+					'userType' => $comment->getActorType(),
+					'userId' => $comment->getActorId(),
+				])
+				->setDateTime($comment->getCreationDateTime());
+
+			if (strlen($comment->getMessage()) > 64) {
+				$notification->setMessage(substr($comment->getMessage(), 0, 64), ['ellipsisEnd']);
+			} else {
+				$notification->setMessage($comment->getMessage());
+			}
+
+			$this->notificationManager->notify($notification);
+		}
+	}
+
 	/**
 	 * Removes all the pending notifications for the room with the given ID.
 	 *
diff --git a/lib/Notification/Notifier.php b/lib/Notification/Notifier.php
index b8bbf8dcd3f8..72106bb6f6b1 100644
--- a/lib/Notification/Notifier.php
+++ b/lib/Notification/Notifier.php
@@ -103,7 +103,7 @@ public function prepare(INotification $notification, $languageCode) {
 		if ($subject === 'call') {
 			return $this->parseCall($notification, $room, $l);
 		}
-		if ($subject === 'mention') {
+		if ($subject === 'mention' ||  $subject === 'chat') {
 			return $this->parseMention($notification, $room, $l);
 		}
 
@@ -163,7 +163,18 @@ protected function parseMention(INotification $notification, Room $room, IL10N $
 		}
 		$notification->setParsedMessage($parsedMessage);
 
-		if ($room->getType() === Room::ONE_TO_ONE_CALL) {
+		if ($notification->getSubject() === 'chat') {
+			$notification
+				->setParsedSubject(
+					$l->t('%s sent you in a private message', [$user->getDisplayName()])
+				)
+				->setRichSubject(
+					$l->t('{user} sent you in a private message'), [
+						'user' => $richSubjectUser
+					]
+				);
+
+		} else if ($room->getType() === Room::ONE_TO_ONE_CALL) {
 			$notification
 				->setParsedSubject(
 					$l->t('%s mentioned you in a private conversation', [$user->getDisplayName()])