Connect MailInApp and Slack to power AI-driven automation

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Start with a template that brings MailInApp and Slack together. Build enterprise-grade automation in minutes.

Our most popular template

Send Slack channel messages for new MailInApp meeting bookings
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MailInApp + Slack
Send Slack channel messages for newly won MailInApp deals
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MailInApp + Filter by Zapier + Slack

Send Slack channel messages for new MailInApp meeting bookings

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MailInApp + Slack

Send Slack channel messages for newly won MailInApp deals

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MailInApp + Filter by Zapier + Slack

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How Zapier works

Zapier makes it easy to integrate MailInApp with Slack - no code necessary. See how you can get setup in minutes.

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1. Choose trigger event

2. Choose action

1. Select the event

Setup

Test

App

Trigger event

Choose a trigger event

Choose a trigger

A trigger is the event that starts your Zap—like a "Meeting Cancelled" from MailInApp.

Add your action

An action happens after the trigger—such as "Add Reaction" in Slack.

You’re connected!

Zapier seamlessly connects MailInApp and Slack, automating your workflow.

Supported triggers and actions

Zapier helps you create workflows that connect your apps to automate repetitive tasks. A trigger is an event that starts a workflow, and an action is an event a Zap performs.

Meeting Cancelled
Triggers when a booked meeting is cancelled.
Trigger
Instant
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New Contact
Triggers when a contact is added to one of your contacts lists.
Trigger
Instant
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New Deal
Triggers when a deal is created in one of your pipelines.
Trigger
Instant
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Experiment Results Ready
Triggers when an A/B experiment's final analysis is in, after its observation window ends.
Trigger
Instant
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New Form Submission
Triggers when someone submits a form in an email or a signup form.
Trigger
Instant
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Journey Completed
Triggers when a contact reaches the end of a journey.
Trigger
Instant
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New Lead
Triggers when a new lead comes in from a signup form or a form in an email.
Trigger
Instant
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- Contacts List
  Required
- Email
  Required
- Fields
Action
Write
- Deal
  Required
- Deal's Pipeline
- Stage
- Title
- Value
- Currency
Action
Write
- Journey
  Required
- Contacts List
  Required
- Email
  Required
Action
Write
- Experiment
- Name Contains
- Status
- Kind
- Include Full Report
Action
Search
- Trigger for Bot Messages?
- Optimized data
Trigger
Instant
Try It
- Channel
  Required
- Trigger for Bot Messages?
- Optimized data
Trigger
Instant
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- Channel
- User Name
- Shared
Trigger
Instant
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- Search Query
  Required
- Optimized data
Trigger
Polling
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- Channel ID
- Reaction
- Member ID
- Message Author ID
- Reacted message detail
- Include additional data
Trigger
Instant
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- Automation Identifier
- Access type
- Include additional data
Trigger
Instant
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New User
Triggers when a new Slack user is created / first joins your org.
Trigger
Instant
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- Text
  Required
- Remind when?
  Required
- Remind who?
Action
Write
- Conversation ID
  Required
- Scheduled As
  Required
- Scheduled Message ID
  Required
Action
Write
- Channel
  Required
- Add Zapier app to channel automatically?
- Message Text
  Required
- Send as a bot?
- Bot Name
- Bot Icon
- Include a link to this automation?
- Attach Image by URL
- Auto-Expand Links?
- Link Usernames and Channel Names?
- Schedule At
- File
- Thread
- Send Channel Message?
- Zap_id
Action
Write
- Allowed_delete_copy
- Conversation ID
  Required
- Message TS (ID)
  Required
- Posted By
Action
Write
- Canvas ID
  Required
- Operation
  Required
Action
Write
- Channel Name
  Required
Action
Write
- Status_copy
- Approval request message
  Required
- Send message as
  Required
- Approval type
  Required
- Zap_id
- Include a link to this automation?
- Approve button URL
- Approve button label
- Add decline button
- Add details button
- Require confirmation
Action
Write
- First Name
- Last Name
- Title
- Email
- Display Name
- User
Action
Write
- Stop on error
  Required
- HTTP Method
  Required
- URL
  Required
- Query string parameters
- Additional request headers
- Body
Action
Write
Get Message by Timestamp
This action retrieves a specific message from a conversation history in Slack using the message's timestamp.
Action
Write
Retrieve Thread Messages
This action retrieves all the messages sent to a specific thread in a selected channel.
Action
Write
Create Private Channel
This action creates a private channel in Slack.
Action
Write
- Conversation ID
  Required
Action
Search
- Conversation ID
  Required
- Message ID (ts)
  Required
Action
Search
- Conversation ID
  Required
- Message TS (ID)
  Required
Action
Search
- Email
  Required
- Return Raw Results?
Action
Search
- Guidance_copy
- Full Name
  Required
- Return Raw Results?
Action
Search

New Meeting Booked
Triggers when someone books a meeting from an email.
Trigger
Instant
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Updated Contact
Triggers when a contact's fields change.
Trigger
Instant
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Deal Stage Changed
Triggers when a deal moves to another stage, including won and lost.
Trigger
Instant
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Experiment Decided
Triggers when someone records the decision on an A/B experiment: a winner, no difference or inconclusive.
Trigger
Instant
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New Interaction
Triggers when a recipient interacts with an email: votes in a poll, answers a quiz, clicks a tracked button, and so on.
Trigger
Instant
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Lead Turned Hot
Triggers when a contact's engagement score crosses your hot-lead threshold.
Trigger
Instant
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New Purchase
Triggers when a recipient completes a purchase from an email.
Trigger
Instant
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- Email
  Required
- Contacts List
- Title
  Required
- Value
- Currency
- Pipeline
- Stage
Action
Write
- To
  Required
- Studio Project
- Subject
- HTML Body
- Text Body
- Merge Data
- From Email
- From Name
- Reply-To
Action
Write
- Email
  Required
- Contacts List
Action
Search
- Email
  Required
- Contacts List
  Required
- Fields
Action
Search or write
New Channel
Triggers when a new #channel is created.
Trigger
Instant
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- Include_alias
Trigger
Instant
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- Username
- Highlight Word
- Trigger for Bot Messages?
- Only Public Channels?
- Include additional data
Trigger
Instant
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- Channel
  Required
Trigger
Instant
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- Channel
  Required
- Trigger for Bot Messages?
- Include additional data
Trigger
Instant
Try It
New Saved Message
Triggers when you save a message.
Trigger
Instant
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- Channel
  Required
- Message
  Required
- Reaction
  Required
Action
Write
- Conversation ID
  Required
Action
Write
- Channel
  Required
- Users
  Required
Action
Write
- Title
- Content
- Channel ID
Action
Write
- Send Multi Message
- Message Text
  Required
- Send as a bot?
- Include a link to this automation?
- Attach Image by URL
- Auto-Expand Links?
- Link Usernames and Channel Names?
- Schedule At
- Zap_id
Action
Write
- Allowed_edit_copy
- Conversation ID
  Required
- Message TS (ID)
  Required
- Posted By
- Content Type
- Reply Broadcast
Action
Write
- Channel
  Required
- Add Zapier app to channel automatically?
- Message Text
  Required
- Send as a bot?
- Bot Name
- Bot Icon
- Include a link to this automation?
- Attach Image by URL
- Auto-Expand Links?
- Link Usernames and Channel Names?
- Schedule At
- Zap_id
- File
- Thread
- Send Channel Message?
Action
Write
- Channel
  Required
- Topic
  Required
- Topic set by
Action
Write
- Status Text
- Status Emoji
- Expiration Time
Action
Write
Remove User from Channel
This action removes a specified user from a specified channel in Slack.
Action
Write
Edit Message
This action updates a specific message sent by the same Authenticated user on Slack. You need to provide the Channel ID, the Timestamp of the message to be edited, and the new text for the message.
Action
Write
Find Public Channel
This action will find a public channel in Slack using either the channel's ID or name.
Action
Write
Delete Message
This action deletes an existing message in a specific channel on Slack. You need to provide the channel ID and the message timestamp as inputs.
Action
Write
- Conversation ID
  Required
Action
Search
- Conversation ID
  Required
- Message ID (ts)
  Required
Action
Search
- Search Query
  Required
- Sort By
- Sort Direction
- Include Bot Messages in Search Results?
Action
Search
- ID
  Required
- Return Raw Results?
Action
Search
- Guidance_copy
- Username
  Required
- Return Raw Results?
Action
Search

For AI agents & developers

Use MailInApp and Slack with AI agents and code

Beyond Zap workflows. Call MailInApp and Slack actions directly from your AI client or your codebase, using the same 9,000+ app integrations Zapier already runs.

No code

Connect via Zapier MCP

Expose MailInApp and Slack actions as tools in any MCP client. Authenticate once, then call them in natural language.

Example actions on this page

Create or Update Contact
Add Reaction

Works with

Claude · ChatGPT · Cursor · any MCP-compatible client

Connect Zapier MCP

Typescript

Call from code with the Zapier SDK

Trigger MailInApp and Slack actions from backend services, scripts, or agent code.

Install

# TypeScript / Node
npm install @zapier/zapier-sdk

Run an action

import { createZapierSdk } from '@zapier/zapier-sdk';

const zapier = createZapierSdk();
await zapier.runAction({ /* mailinapp / slack action */ });

Run the SDK docs

There is no Python package yet. SDK is TypeScript-only (@zapier/zapier-sdk). The MCP server URL is personal to your account; get it at zapier.com/mcp.

Zapier is the automation platform of choice for 87% of Forbes Cloud 100 companies in 2023

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Customers who say using Zapier has made them better at their job

25m

Customers have created over 25 million Zaps on the platform

6 mins

The average user takes less than 6 minutes to set up a Zap

Connect MailInApp and Slack to integrate crucial parts of your business

With Zapier, you can integrate everything from basic data entry to end-to-end processes. Here are some of the business-critical workflows that people automate with Zapier.

Automate your lead management and improve conversions

With Zapier, you can automate every part of your lead funnel and give yourself the best chance at converting leads. Automate everything from lead capture to outreach to reporting—and close more deals as a result.

Create more impactful campaigns with automation

Measuring campaign performance across platforms can get chaotic. Plus, digging up the right metrics costs you precious time and effort. With Zapier, you can create a centralized view of your performance, skillfully manage your lists, and ensure your campaigns drive ROI across the business.

Provide world-class support with a little help from automation

Support reps can't be productive when they have to track down crucial information for every incident or ticket. With Zapier, you can automatically send your reps the context they need to resolve tickets quickly and create a seamless customer experience.

Automate your way to actionable, up-to-date data

The days of manually exporting and importing data are over. With Zapier, you can send data where it needs to go, in the format you need it—so you can centralize your data and unlock more insights.

Resolve incidents faster with automation

Your technical support team wants to focus on tech tickets rather than admin work. With Zapier, you can automate everything from ticket creation to routing to inter-team communication—eliminating friction from incident management and increasing speed to resolution.

Learn how to automate Slack on the Zapier blog

Make work flow with AI

Level up your MailInApp to Slack integration with AI. Extract, summarize, and transform your integration data with leading AI models like OpenAI, Anthropic, and more.

Learn about AI automation

About MailInApp

MailInApp is an interactive email platform: build polls, forms, quizzes, bookings and checkouts that work right inside the inbox.

HelpHelp

Related categories

About Slack

Slack is a platform for team communication: everything in one place, instantly searchable, available wherever you go. Offering instant messaging, document sharing and knowledge search for modern teams.

Learn moreLearn moreHelpHelp

Related categories

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Connect MailInApp and Slack to power AI-driven automation

Launch your first automated workflow

Send Slack channel messages for new MailInApp meeting bookings

Send Slack channel messages for newly won MailInApp deals

Send Slack channel messages for new MailInApp meeting bookings

Send Slack channel messages for newly won MailInApp deals

Top companies trust Zapier to automate work that solves their unique business problems—no coding required.

How Zapier works

Choose a trigger

Add your action

You’re connected!

Supported triggers and actions

Use MailInApp and Slack with AI agents and code

Connect via Zapier MCP

Call from code with the Zapier SDK

Zapier is the automation platform of choice for 87% of Forbes Cloud 100 companies in 2023

Connect MailInApp and Slack to integrate crucial parts of your business

Automate your lead management and improve conversions

Create more impactful campaigns with automation

Provide world-class support with a little help from automation

Automate your way to actionable, up-to-date data

Resolve incidents faster with automation

Learn how to automate Slack on the Zapier blog

Automatically send a Slack message for new Google Sheets activity

How to automatically summarize Slack threads

Automatically set your Slack channel topic

Make work flow with AI

Connect MailInApp to Slack on the world's largest no-code automation platform