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Choose a Trigger

Choose an Action

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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 "New Contact" from RadarSend.

Add your action

An action happens after the trigger—such as "Only continue if..." in Filter by Zapier.

You’re connected!

Zapier seamlessly connects RadarSend and Filter by Zapier, 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.

New Contact
Triggers when a contact you can email is added one at a time: through the API, in the app, or by a form. A double opt-in sign-up triggers it once confirmed. File imports do not trigger it.
Trigger
Instant
Try It
Updated Contact
Triggers when a value in a contact's record changes. Saving the same values again, bulk changes, imports and bounces do not trigger it.
Trigger
Instant
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- Form
Trigger
Instant
Try It
- List or segment
Trigger
Instant
Try It
- List
  Required
- Email
  Required
- Create contacts that do not exist yet?
Action
Write

- Email
  Required
- Event name
  Required
- Activity type
- Properties
- Occurred at
Action
Write
- Email
  Required
- Tags to add
- Tags to remove
Action
Write

- Email
  Required
Action
Search
- Only continue if...
  Required
Action
Filter

Contact Unsubscribed
Triggers when a contact unsubscribes, from everything or from some email types.
Trigger
Instant
Try It
Email Link Clicked by a Person
Triggers when a person clicks a link in an email. It arrives a few minutes later; security-scanner clicks are never sent.
Trigger
Instant
Try It
- List or segment
Trigger
Instant
Try It
- Sequence
Trigger
Instant
Try It
- Sequence
  Required
- Email
  Required
- First name
- Last name
- Company
- Tags
- Idempotency key
Action
Write
- List
  Required
- Email
  Required
Action
Write
- Email
  Required
- First name
- Last name
- Full name
- Company
- Job title
- Phone
- Website
- Address line 1
- Address line 2
- City
- State or region
- Postal code
- Country
- Time zone
- External ID
- Source
- Stage
- Stage for new contacts only
- Tags to add
- Other custom fields
Action
Write
- Email
  Required
- First name
- Last name
- Full name
- Company
- Job title
- Phone
- Website
- Address line 1
- Address line 2
- City
- State or region
- Postal code
- Country
- Time zone
- External ID
- Source
- Stage
- Stage for new contacts only
- Tags to add
- Other custom fields
Action
Search or write

For AI agents & developers

Use RadarSend and Filter by Zapier with AI agents and code

Beyond Zap workflows. Call RadarSend and Filter by Zapier 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 RadarSend and Filter by Zapier actions as tools in any MCP client. Authenticate once, then call them in natural language.

Example actions on this page

Add Contact to List
Only continue if...

Works with

Claude · ChatGPT · Cursor · any MCP-compatible client

Connect Zapier MCP

Typescript

Call from code with the Zapier SDK

Trigger RadarSend and Filter by Zapier 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({ /* radarsend / filter 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.

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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 RadarSend and Filter by Zapier 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 Filter by Zapier on the Zapier blog

Make work flow with AI

Level up your RadarSend to Filter by Zapier integration with AI. Extract, summarize, and transform your integration data with leading AI models like OpenAI, Anthropic, and more.

Learn about AI automation

About RadarSend

RadarSend is an email marketing and automation platform that connects email engagement, website activity, and customer data to drive more sales and renewals.

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Related categories

Marketing Automation

About Filter by Zapier

Only allow a Zap to proceed when a certain condition is met. For example, if you're sending a text message when you receive a new email, you could use a Filter that only sends a text message when the email received is from a certain address.

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