diff --git a/src/core/ChatProvider.js b/src/core/ChatProvider.js
index d593d6c..3afc68c 100644
--- a/src/core/ChatProvider.js
+++ b/src/core/ChatProvider.js
@@ -4,11 +4,11 @@
 import { Op } from 'sequelize';
 import logger from './logger';
 import redis from '../data/redis/client';
-import User from '../data/User';
 import RateLimiter from '../utils/RateLimiter';
 import {
   Channel, RegUser, UserChannel, Message,
 } from '../data/sql';
+import { findIdByNameOrId } from '../data/sql/RegUser';
 import ChatMessageBuffer from './ChatMessageBuffer';
 import socketEvents from '../socket/SocketEvents';
 import { cheapDetector } from './isProxy';
@@ -26,9 +26,12 @@ function getUserFromMd(mdUserLink) {
   let mdUser = mdUserLink.trim();
   if (mdUser[0] === '@') {
     mdUser = mdUser.substring(1);
-  }
-  if (mdUser[0] === '[' && mdUser[mdUser.length - 1] === ')') {
-    return mdUser.substring(1, mdUser.lastIndexOf(']')).trim();
+    if (mdUser[0] === '[' && mdUser[mdUser.length - 1] === ')') {
+      // if mdUser ping, select Id
+      mdUser = mdUser.substring(
+        mdUser.lastIndexOf('(') + 1, mdUser.length - 1,
+      ).trim();
+    }
   }
   return mdUser;
 }
@@ -416,7 +419,7 @@ export class ChatProvider {
       return t`Your mail has to be verified in order to chat`;
     }
 
-    const muted = await ChatProvider.checkIfMuted(user);
+    const muted = await ChatProvider.checkIfMuted(user.id);
     if (muted === -1) {
       return t`You are permanently muted, join our guilded to apppeal the mute`;
     }
@@ -510,24 +513,24 @@ export class ChatProvider {
     );
   }
 
-  static async checkIfMuted(user) {
-    const key = `mute:${user.id}`;
+  static async checkIfMuted(uid) {
+    const key = `mute:${uid}`;
     const ttl = await redis.ttl(key);
     return ttl;
   }
 
-  async mute(plainName, opts) {
+  async mute(nameOrId, opts) {
     const timeMin = opts.duration || null;
     const initiator = opts.initiator || null;
     const printChannel = opts.printChannel || null;
 
-    const name = (plainName.startsWith('@'))
-      ? plainName.substring(1) : plainName;
-    const id = await User.name2Id(name);
-    if (!id) {
-      return `Couldn't find user ${name}`;
+    const searchResult = await findIdByNameOrId(nameOrId);
+    if (!searchResult) {
+      return `Couldn't find user ${nameOrId}`;
     }
+    const { name, id } = searchResult;
     const userPing = `@[${name}](${id})`;
+
     const key = `mute:${id}`;
     if (timeMin) {
       const ttl = timeMin * 60;
@@ -561,17 +564,17 @@ export class ChatProvider {
     return null;
   }
 
-  async unmute(plainName, opts) {
+  async unmute(nameOrId, opts) {
     const initiator = opts.initiator || null;
     const printChannel = opts.printChannel || null;
 
-    const name = (plainName.startsWith('@'))
-      ? plainName.substring(1) : plainName;
-    const id = await User.name2Id(name);
-    if (!id) {
-      return `Couldn't find user ${name}`;
+    const searchResult = await findIdByNameOrId(nameOrId);
+    if (!searchResult) {
+      return `Couldn't find user ${nameOrId}`;
     }
+    const { name, id } = searchResult;
     const userPing = `@[${name}](${id})`;
+
     const key = `mute:${id}`;
     const delKeys = await redis.del(key);
     if (delKeys !== 1) {
diff --git a/src/data/User.js b/src/data/User.js
index ae49df7..feb6928 100644
--- a/src/data/User.js
+++ b/src/data/User.js
@@ -7,7 +7,7 @@
  * @flow
  * */
 
-import Sequelize from 'sequelize';
+import { QueryTypes, Utils } from 'sequelize';
 import redis from './redis/client';
 import logger from '../core/logger';
 
@@ -93,23 +93,6 @@ class User {
     }
   }
 
-  static async name2Id(name: string) {
-    try {
-      const userq = await sequelize.query(
-        'SELECT id FROM Users WHERE name = $1',
-        {
-          bind: [name],
-          type: Sequelize.QueryTypes.SELECT,
-          raw: true,
-          plain: true,
-        },
-      );
-      return userq.id;
-    } catch {
-      return null;
-    }
-  }
-
   setRegUser(reguser) {
     this.regUser = reguser;
     this.id = reguser.id;
@@ -244,7 +227,7 @@ class User {
         'SELECT totalPixels FROM Users WHERE id = $1',
         {
           bind: [id],
-          type: Sequelize.QueryTypes.SELECT,
+          type: QueryTypes.SELECT,
           raw: true,
           plain: true,
         },
@@ -267,7 +250,7 @@ class User {
     if (!this.regUser) return false;
     try {
       await this.regUser.update({
-        lastLogIn: Sequelize.literal('CURRENT_TIMESTAMP'),
+        lastLogIn: new Utils.Literal('CURRENT_TIMESTAMP'),
       });
     } catch (err) {
       return false;
diff --git a/src/data/sql/RegUser.js b/src/data/sql/RegUser.js
index 81a006b..918213e 100644
--- a/src/data/sql/RegUser.js
+++ b/src/data/sql/RegUser.js
@@ -5,7 +5,7 @@
  *
  */
 
-import { DataTypes } from 'sequelize';
+import { DataTypes, QueryTypes } from 'sequelize';
 import sequelize from './sequelize';
 
 import { generateHash } from '../../utils/hash';
@@ -146,4 +146,39 @@ const RegUser = sequelize.define('User', {
 
 });
 
+export async function name2Id(name) {
+  try {
+    const userq = await sequelize.query(
+      'SELECT id FROM Users WHERE name = $1',
+      {
+        bind: [name],
+        type: QueryTypes.SELECT,
+        raw: true,
+        plain: true,
+      },
+    );
+    return userq.id;
+  } catch {
+    return null;
+  }
+}
+
+export async function findIdByNameOrId(searchString) {
+  let id = await name2Id(searchString);
+  if (id) {
+    return { name: searchString, id };
+  }
+  id = parseInt(searchString, 10);
+  if (!Number.isNaN(id)) {
+    const user = await RegUser.findByPk(id, {
+      attributes: ['name'],
+      raw: true,
+    });
+    if (user) {
+      return { name: user.name, id };
+    }
+  }
+  return null;
+}
+
 export default RegUser;
diff --git a/src/socket/APISocketServer.js b/src/socket/APISocketServer.js
index 08691ca..d603db9 100644
--- a/src/socket/APISocketServer.js
+++ b/src/socket/APISocketServer.js
@@ -11,7 +11,7 @@
 import WebSocket from 'ws';
 
 import socketEvents from './SocketEvents';
-import chatProvider from '../core/ChatProvider';
+import chatProvider, { ChatProvider } from '../core/ChatProvider';
 import { RegUser } from '../data/sql';
 import { getIPFromRequest } from '../utils/ip';
 import { setPixelByCoords } from '../core/setPixel';
@@ -239,6 +239,13 @@ class APISocketServer {
       if (command === 'chat') {
         const [name, id, msg, country, channelId] = packet;
         const uid = id || chatProvider.apiSocketUserId;
+        /*
+         * don't send if muted
+         */
+        const mutedTtl = await ChatProvider.checkIfMuted(uid);
+        if (mutedTtl !== -2) {
+          return;
+        }
         /*
          * do not send message back up ws that sent it
          */