diff --git a/packages/backend/src/apps/slack/actions/send-a-message-to-channel/index.ts b/packages/backend/src/apps/slack/actions/send-a-message-to-channel/index.ts
index 7983f4c7..0b793961 100644
--- a/packages/backend/src/apps/slack/actions/send-a-message-to-channel/index.ts
+++ b/packages/backend/src/apps/slack/actions/send-a-message-to-channel/index.ts
@@ -32,13 +32,46 @@ export default defineAction({
       description: 'The content of your new message.',
       variables: true,
     },
+    {
+      label: 'Send as a bot?',
+      key: 'sendAsBot',
+      type: 'dropdown' as const,
+      required: false,
+      value: false,
+      description: 'If you choose no, this message will appear to come from you. Direct messages are always sent by bots.',
+      variables: false,
+      options: [
+        {
+          label: 'Yes',
+          value: true,
+        },
+        {
+          label: 'No',
+          value: false,
+        }
+      ]
+    },
+    {
+      label: 'Bot name',
+      key: 'botName',
+      type: 'string' as const,
+      required: true,
+      value: 'Automatisch',
+      description: 'Specify the bot name which appears as a bold username above the message inside Slack. Defaults to Automatisch.',
+      variables: true,
+    },
+    {
+      label: 'Bot icon',
+      key: 'botIcon',
+      type: 'string' as const,
+      required: false,
+      description: 'Either an image url or an emoji available to your team (surrounded by :). For example, https://example.com/icon_256.png or :robot_face:',
+      variables: true,
+    },
   ],
 
   async run($) {
-    const channelId = $.step.parameters.channel as string;
-    const text = $.step.parameters.message as string;
-
-    const message = await postMessage($, channelId, text);
+    const message = await postMessage($);
 
     return message;
   },
diff --git a/packages/backend/src/apps/slack/actions/send-a-message-to-channel/post-message.ts b/packages/backend/src/apps/slack/actions/send-a-message-to-channel/post-message.ts
index c19e61d0..fd1f35cc 100644
--- a/packages/backend/src/apps/slack/actions/send-a-message-to-channel/post-message.ts
+++ b/packages/backend/src/apps/slack/actions/send-a-message-to-channel/post-message.ts
@@ -1,23 +1,54 @@
 import { IGlobalVariable } from '@automatisch/types';
+import { URL } from 'url';
 
-const postMessage = async (
-  $: IGlobalVariable,
-  channelId: string,
-  text: string
-) => {
-  const params = {
+type TData = {
+  channel: string;
+  text: string;
+  username?: string;
+  icon_url?: string;
+  icon_emoji?: string;
+}
+
+const postMessage = async ($: IGlobalVariable) => {
+  const { parameters } = $.step;
+  const channelId = parameters.channel as string;
+  const text = parameters.message as string;
+  const sendAsBot = parameters.sendAsBot as boolean;
+  const botName = parameters.botName as string;
+  const botIcon = parameters.botIcon as string;
+
+  const data: TData = {
     channel: channelId,
     text,
   };
 
-  const response = await $.http.post('/chat.postMessage', params);
+  if (sendAsBot) {
+    data.username = botName;
+    try {
+      // challenging the input to check if it is a URL!
+      new URL(botIcon);
+      data.icon_url = botIcon;
+    } catch {
+      data.icon_emoji = botIcon;
+    }
+  }
+
+  const customConfig = {
+    sendAsBot,
+  };
+
+  const response = await $.http.post(
+    '/chat.postMessage',
+    data,
+    { additionalProperties: customConfig },
+  );
 
   if (response.data.ok === false) {
     throw new Error(JSON.stringify(response.data));
   }
 
   const message = {
-    raw: response?.data?.message,
+    raw: response?.data,
   };
 
   $.setActionItem(message);
diff --git a/packages/backend/src/apps/slack/auth/create-auth-data.ts b/packages/backend/src/apps/slack/auth/create-auth-data.ts
new file mode 100644
index 00000000..64006a74
--- /dev/null
+++ b/packages/backend/src/apps/slack/auth/create-auth-data.ts
@@ -0,0 +1,62 @@
+import { IField, IGlobalVariable } from '@automatisch/types';
+import qs from 'qs';
+
+const scopes = [
+  'channels:manage',
+  'channels:read',
+  'channels:join',
+  'chat:write',
+  'chat:write.customize',
+  'chat:write.public',
+  'files:write',
+  'im:write',
+  'mpim:write',
+  'team:read',
+  'users.profile:read',
+  'users:read',
+  'workflow.steps:execute',
+  'users:read.email',
+  'commands',
+];
+const userScopes = [
+  'channels:history',
+  'channels:read',
+  'channels:write',
+  'chat:write',
+  'emoji:read',
+  'files:read',
+  'files:write',
+  'groups:history',
+  'groups:read',
+  'groups:write',
+  'im:write',
+  'mpim:write',
+  'reactions:read',
+  'reminders:write',
+  'search:read',
+  'stars:read',
+  'team:read',
+  'users.profile:read',
+  'users.profile:write',
+  'users:read',
+  'users:read.email',
+];
+
+export default async function createAuthData($: IGlobalVariable) {
+  const oauthRedirectUrlField = $.app.auth.fields.find(
+    (field: IField) => field.key == 'oAuthRedirectUrl'
+  );
+  const redirectUri = oauthRedirectUrlField.value as string;
+  const searchParams = qs.stringify({
+    client_id: $.auth.data.consumerKey as string,
+    redirect_uri: redirectUri,
+    scope: scopes.join(','),
+    user_scope: userScopes.join(','),
+  });
+
+  const url = `${$.app.baseUrl}/oauth/v2/authorize?${searchParams}`;
+
+  await $.auth.set({
+    url,
+  });
+};
diff --git a/packages/backend/src/apps/slack/auth/index.ts b/packages/backend/src/apps/slack/auth/index.ts
index 0f36afcc..88569ba0 100644
--- a/packages/backend/src/apps/slack/auth/index.ts
+++ b/packages/backend/src/apps/slack/auth/index.ts
@@ -1,17 +1,41 @@
+import createAuthData from './create-auth-data';
 import verifyCredentials from './verify-credentials';
 import isStillVerified from './is-still-verified';
 
 export default {
   fields: [
     {
-      key: 'accessToken',
-      label: 'Access Token',
+      key: 'oAuthRedirectUrl',
+      label: 'OAuth Redirect URL',
+      type: 'string' as const,
+      required: true,
+      readOnly: true,
+      value: '{WEB_APP_URL}/app/slack/connections/add',
+      placeholder: null,
+      description:
+        'When asked to input an OAuth callback or redirect URL in Slack OAuth, enter the URL above.',
+      clickToCopy: true,
+    },
+    {
+      key: 'consumerKey',
+      label: 'API Key',
       type: 'string' as const,
       required: true,
       readOnly: false,
       value: null,
       placeholder: null,
-      description: 'Access token of slack that Automatisch will connect to.',
+      description: null,
+      clickToCopy: false,
+    },
+    {
+      key: 'consumerSecret',
+      label: 'API Secret',
+      type: 'string' as const,
+      required: true,
+      readOnly: false,
+      value: null,
+      placeholder: null,
+      description: null,
       clickToCopy: false,
     },
   ],
@@ -30,8 +54,12 @@ export default {
           value: null,
           properties: [
             {
-              name: 'accessToken',
-              value: '{fields.accessToken}',
+              name: 'consumerKey',
+              value: '{fields.consumerKey}',
+            },
+            {
+              name: 'consumerSecret',
+              value: '{fields.consumerSecret}',
             },
           ],
         },
@@ -40,6 +68,53 @@ export default {
     {
       step: 2,
       type: 'mutation' as const,
+      name: 'createAuthData',
+      arguments: [
+        {
+          name: 'id',
+          value: '{createConnection.id}',
+        },
+      ],
+    },
+    {
+      step: 3,
+      type: 'openWithPopup' as const,
+      name: 'openAuthPopup',
+      arguments: [
+        {
+          name: 'url',
+          value: '{createAuthData.url}',
+        },
+      ],
+    },
+    {
+      step: 4,
+      type: 'mutation' as const,
+      name: 'updateConnection',
+      arguments: [
+        {
+          name: 'id',
+          value: '{createConnection.id}',
+        },
+        {
+          name: 'formattedData',
+          value: null,
+          properties: [
+            {
+              name: 'code',
+              value: '{openAuthPopup.code}',
+            },
+            {
+              name: 'state',
+              value: '{openAuthPopup.state}',
+            },
+          ],
+        },
+      ],
+    },
+    {
+      step: 5,
+      type: 'mutation' as const,
       name: 'verifyConnection',
       arguments: [
         {
@@ -75,8 +150,12 @@ export default {
           value: null,
           properties: [
             {
-              name: 'accessToken',
-              value: '{fields.accessToken}',
+              name: 'consumerKey',
+              value: '{fields.consumerKey}',
+            },
+            {
+              name: 'consumerSecret',
+              value: '{fields.consumerSecret}',
             },
           ],
         },
@@ -85,6 +164,53 @@ export default {
     {
       step: 3,
       type: 'mutation' as const,
+      name: 'createAuthData',
+      arguments: [
+        {
+          name: 'id',
+          value: '{connection.id}',
+        },
+      ],
+    },
+    {
+      step: 4,
+      type: 'openWithPopup' as const,
+      name: 'openAuthPopup',
+      arguments: [
+        {
+          name: 'url',
+          value: '{createAuthData.url}',
+        },
+      ],
+    },
+    {
+      step: 5,
+      type: 'mutation' as const,
+      name: 'updateConnection',
+      arguments: [
+        {
+          name: 'id',
+          value: '{connection.id}',
+        },
+        {
+          name: 'formattedData',
+          value: null,
+          properties: [
+            {
+              name: 'code',
+              value: '{openAuthPopup.code}',
+            },
+            {
+              name: 'state',
+              value: '{openAuthPopup.state}',
+            },
+          ],
+        },
+      ],
+    },
+    {
+      step: 6,
+      type: 'mutation' as const,
       name: 'verifyConnection',
       arguments: [
         {
@@ -95,6 +221,7 @@ export default {
     },
   ],
 
+  createAuthData,
   verifyCredentials,
   isStillVerified,
 };
diff --git a/packages/backend/src/apps/slack/auth/is-still-verified.ts b/packages/backend/src/apps/slack/auth/is-still-verified.ts
index 95a1ef29..060ad5cd 100644
--- a/packages/backend/src/apps/slack/auth/is-still-verified.ts
+++ b/packages/backend/src/apps/slack/auth/is-still-verified.ts
@@ -1,10 +1,10 @@
 import { IGlobalVariable } from '@automatisch/types';
-import verifyCredentials from './verify-credentials';
+import getCurrentUser from '../common/get-current-user';
 
 const isStillVerified = async ($: IGlobalVariable) => {
   try {
-    await verifyCredentials($);
-    return true;
+    const user = await getCurrentUser($);
+    return !!user.id;
   } catch (error) {
     return false;
   }
diff --git a/packages/backend/src/apps/slack/auth/verify-credentials.ts b/packages/backend/src/apps/slack/auth/verify-credentials.ts
index 0152348a..3f3feefc 100644
--- a/packages/backend/src/apps/slack/auth/verify-credentials.ts
+++ b/packages/backend/src/apps/slack/auth/verify-credentials.ts
@@ -1,34 +1,51 @@
-import qs from 'qs';
 import { IGlobalVariable } from '@automatisch/types';
+import getCurrentUser from '../common/get-current-user';
 
 const verifyCredentials = async ($: IGlobalVariable) => {
-  const headers = {
-    'Content-Type': 'application/x-www-form-urlencoded',
+  const oauthRedirectUrlField = $.app.auth.fields.find(
+    (field) => field.key == 'oAuthRedirectUrl'
+  );
+  const redirectUri = oauthRedirectUrlField.value as string;
+  const params = {
+    code: $.auth.data.code,
+    client_id: $.auth.data.consumerKey,
+    client_secret: $.auth.data.consumerSecret,
+    redirect_uri: redirectUri,
   };
-
-  const stringifiedBody = qs.stringify({
-    token: $.auth.data.accessToken,
-  });
-
-  const response = await $.http.post('/auth.test', stringifiedBody, {
-    headers,
-  });
+  const response = await $.http.post('/oauth.v2.access', null, { params });
 
   if (response.data.ok === false) {
     throw new Error(
-      `Error occured while verifying credentials: ${response.data.error}.(More info: https://api.slack.com/methods/auth.test#errors)`
+      `Error occured while verifying credentials: ${response.data.error}. (More info: https://api.slack.com/methods/oauth.v2.access#errors)`
     );
   }
 
-  const { bot_id: botId, user: screenName } = response.data;
+  const {
+    bot_user_id: botId,
+    authed_user: {
+      id: userId,
+      access_token: userAccessToken,
+    },
+    access_token: botAccessToken,
+    team: {
+      name: teamName,
+    }
+  } = response.data;
 
-  $.auth.set({
+  await $.auth.set({
     botId,
-    screenName,
+    userId,
+    userAccessToken,
+    botAccessToken,
+    screenName: teamName,
     token: $.auth.data.accessToken,
   });
 
-  return response.data;
+  const currentUser = await getCurrentUser($);
+
+  await $.auth.set({
+    screenName: `${currentUser.real_name} @ ${teamName}`
+  });
 };
 
 export default verifyCredentials;
diff --git a/packages/backend/src/apps/slack/common/add-auth-header.ts b/packages/backend/src/apps/slack/common/add-auth-header.ts
index f4f2076f..89ab2eec 100644
--- a/packages/backend/src/apps/slack/common/add-auth-header.ts
+++ b/packages/backend/src/apps/slack/common/add-auth-header.ts
@@ -1,10 +1,21 @@
 import { TBeforeRequest } from '@automatisch/types';
 
 const addAuthHeader: TBeforeRequest = ($, requestConfig) => {
-  if (requestConfig.headers && $.auth.data?.accessToken) {
-    requestConfig.headers.Authorization = `Bearer ${$.auth.data.accessToken}`;
+  const authData = $.auth.data;
+  if (
+    requestConfig.headers
+    && authData?.userAccessToken
+    && authData?.botAccessToken
+  ) {
+    if (requestConfig.additionalProperties?.sendAsBot) {
+      requestConfig.headers.Authorization = `Bearer ${authData.botAccessToken}`;
+    } else {
+      requestConfig.headers.Authorization = `Bearer ${authData.userAccessToken}`;
+    }
   }
 
+  requestConfig.headers['Content-Type'] = requestConfig.headers['Content-Type'] || 'application/json; charset=utf-8';
+
   return requestConfig;
 };
 
diff --git a/packages/backend/src/apps/slack/common/get-current-user.ts b/packages/backend/src/apps/slack/common/get-current-user.ts
new file mode 100644
index 00000000..e0500f8f
--- /dev/null
+++ b/packages/backend/src/apps/slack/common/get-current-user.ts
@@ -0,0 +1,13 @@
+import { IGlobalVariable, IJSONObject } from '@automatisch/types';
+
+const getCurrentUser = async ($: IGlobalVariable): Promise<IJSONObject> => {
+  const params = {
+    user: $.auth.data.userId as string,
+  }
+  const response = await $.http.get('/users.info', { params });
+  const currentUser = response.data.user;
+
+  return currentUser;
+};
+
+export default getCurrentUser;
diff --git a/packages/backend/src/helpers/compute-parameters.ts b/packages/backend/src/helpers/compute-parameters.ts
index 62a9925d..4e845db8 100644
--- a/packages/backend/src/helpers/compute-parameters.ts
+++ b/packages/backend/src/helpers/compute-parameters.ts
@@ -38,6 +38,9 @@ export default function computeParameters(
       };
     }
 
-    return result;
+    return {
+      ...result,
+      [key]: value,
+    };
   }, {});
 }
diff --git a/packages/docs/pages/apps/slack/connection.md b/packages/docs/pages/apps/slack/connection.md
index 92db6c18..d0049944 100644
--- a/packages/docs/pages/apps/slack/connection.md
+++ b/packages/docs/pages/apps/slack/connection.md
@@ -6,18 +6,20 @@ This page explains the steps you need to follow to set up the Slack connection i
 
 1. Go to the [link](https://api.slack.com/apps?new_app=1) to **create an app**
    on Slack API.
-2. Select **From scratch**.
-3. Enter **App name**.
-4. Pick the workspace you would like to use with the Slack connection.
-5. Click on **Create App** button.
-6. Click the **Permissions** card on the **Add features and functionality**
-   section.
-7. Go to **User Token Scopes** and add the necessary scopes.
-   ([more info](https://api.slack.com/scopes?filter=user))
-8. Go to **OAuth Tokens for Your Workspace** and click **Install to Workspace**.
-9. In **Where should Sample post?** section, select the channel you would like
-   to use with Automatisch, and click **Allow**.
-10. Copy **User OAuth Token** and paste it to **Access Token** on the
-    Automatisch page.
-11. Click **Submit** button on Automatisch.
-12. Now, you can start using the Slack connection with Automatisch.
+1. Select **From scratch**.
+1. Enter **App name**.
+1. Pick the workspace you would like to use with the Slack connection.
+1. Click on **Create App** button.
+1. Copy **Client ID** and **Client Secret** values and save them to use later.
+1. Go to **OAuth & Permissions** page.
+1. Copy **OAuth Redirect URL** from Automatisch and add it in Redirect URLs. Don't forget to save it after adding it by clicking **Save URLs** button!
+1. Go to **Bot Token Scopes** and add `chat:write.customize` along with `chat:write` scope to enable the bot functionality.
+
+:::warning HTTPS required!
+
+Slack does **not** allow non-secure URLs in redirect URLs. Therefore, you will need to serve Automatisch via HTTPS protocol.
+:::
+
+10. Paste **Client ID** and **Client Secret** values you have saved earlier and paste them into Automatisch as **Consumer Key** and **Consumer Secret**, respectively.
+1. Click **Submit** button on Automatisch.
+1. Now, you can start using the Slack connection with Automatisch.
diff --git a/packages/types/index.d.ts b/packages/types/index.d.ts
index 08446cf9..639d33a7 100644
--- a/packages/types/index.d.ts
+++ b/packages/types/index.d.ts
@@ -301,4 +301,8 @@ declare module 'axios' {
   interface AxiosResponse {
     httpError?: IJSONObject;
   }
+
+  interface AxiosRequestConfig {
+    additionalProperties?: Record<string, unknown>;
+  }
 }