diff --git a/README.md b/README.md
index c1e4716..63a8ae8 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Innovative way to market and communicate
 2. Run `npm install` to install dependencies of [Suppis-core](https://github.com/Nummenpojat/suppis-core)
 3. Run `npm install -g ts-node` to install ts-node, so you don't have to build the project every time
 4. Now you can run `npm run dev` or `npm run start` to start up the app
-   - If you want to build the app run `npm run build
+   - If you want to build the app run `npm run build`
 
 
 ## How to configure [Firebase](https://firebase.google.com/)
@@ -34,3 +34,8 @@ Innovative way to market and communicate
   - Takes a message and a number in body
   - Responses with string on the body
     - On status code 409 responses with string on the body containing qr
+- Send message to list of people on `/whatsapp/send/list`
+  - Post request
+  - Takes a message and list of numbers in body
+  - Responses with string on the body
+    - On status code 409 responses with string on the body containing qr
diff --git a/package.json b/package.json
index e237805..d6ea541 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "Suppis-core",
-  "version": "1.0.1-Beta",
+  "version": "1.1.0-Beta",
   "description": "Backend for Suppis",
   "main": "dist/main.js",
   "scripts": {
diff --git a/src/modules/whatsapp/commands/sendMessageToList.ts b/src/modules/whatsapp/commands/sendMessageToList.ts
index d9ff12c..8c4df5f 100644
--- a/src/modules/whatsapp/commands/sendMessageToList.ts
+++ b/src/modules/whatsapp/commands/sendMessageToList.ts
@@ -1,37 +1,49 @@
-import {client} from "../main";
+import {checkNumbers, client, isClientReady} from "../main";
 
 /**
  * Send same message to list of people
  * @param message Text that is sent to list provided
  * @param persons Array that contains numbers of people to send the message
  * */
-export const sendMessageToList = async (message: string, persons: string[]) => {
-
-  console.log('Sending messages...');
+export const sendMessageToList = async (message: string, numbers: string[]) => {
 
   // Checking that message is not empty
   if (message == "" || message == null) {
     throw "You need to provide message to send"
   }
 
-  // Sending message to each on the list
-  persons.forEach((person: any) => {
+  try {
+
+    // Checking that message can be sent
+    isClientReady()
+    await checkNumbers(numbers);
+
+  } catch (error) {
+    throw error
+  }
+
+  // Sending message to each number on the list
+  for (const num of numbers) {
 
     //Making chat id from phone number to use at client.sendMessage to identify where to send the message
-    let chatId = person.number + "@c.us"
+    let chatId = num + "@c.us"
 
     // Removing + at the start if it exits so the phone number is in right format
     if (chatId.startsWith('+')) {
       chatId = chatId.substring(1)
     }
 
-    // Sending message to chosen chat
-    client.sendMessage(chatId, message)
-      .then((message) => {
-        console.log(`Message ${message.body} sent to ${person.name}`);
-      })
-      .catch((error: Error) => {
-        throw error
-      })
-  })
+    try {
+
+      // Sending message to chosen chat
+      await client.sendMessage(chatId, message);
+      console.log(`Message ${message} sent to ${num}`);
+
+    } catch (error: any) {
+      if (error.message != undefined) {
+        throw error.message
+      }
+      throw error
+    }
+  }
 }
\ No newline at end of file
diff --git a/src/modules/whatsapp/main.ts b/src/modules/whatsapp/main.ts
index e26674a..f0b8954 100644
--- a/src/modules/whatsapp/main.ts
+++ b/src/modules/whatsapp/main.ts
@@ -40,6 +40,32 @@ export const startWhatsappSession = async () => {
   })
 }
 
+export const checkNumbers = async (numbers: string[]) => {
+  for (const num of numbers) {
+
+    // Making chat id from phone number to use at client.isRegisteredUser to use as number which is checked
+    let chatId = num + "@c.us"
+
+    // Removing + at the start if it exits so the phone number is in right format
+    if (chatId.startsWith('+')) {
+      chatId = chatId.substring(1)
+    }
+
+    try {
+      const isRegistered = await client.isRegisteredUser(chatId)
+      if (!isRegistered) {
+        throw `Number ${num} is invalid`
+      }
+      console.log(`${num} is valid`)
+    } catch (error: any) {
+      if (error.message != undefined) {
+        throw error.message
+      }
+      throw error
+    }
+  }
+}
+
 
 
 
diff --git a/src/router/whatsapp.ts b/src/router/whatsapp.ts
index 517ce86..af32e88 100644
--- a/src/router/whatsapp.ts
+++ b/src/router/whatsapp.ts
@@ -1,6 +1,7 @@
 import {Router} from "express";
 import {sendMessage} from "../modules/whatsapp/commands/sendMessage";
 import {qr} from "../modules/whatsapp/main";
+import {sendMessageToList} from "../modules/whatsapp/commands/sendMessageToList";
 
 export const router = Router()
 
@@ -19,5 +20,15 @@ router.post("/send/one", (req, res) => {
 })
 
 router.post("/send/list", (req, res) => {
-  res.status(503).send("Sending messages to list of people is not yet implemented")
+  sendMessageToList(req.body.message, req.body.numbers)
+    .then(() => {
+      res.status(200).send("Messages sent")
+    })
+    .catch((reason) => {
+      if (reason.type == "qr") {
+        res.status(409).send(qr)
+      } else {
+        res.status(500).send(reason)
+      }
+    })
 })
\ No newline at end of file