Connect Rejoiner and Viral Loops to power AI-driven automation

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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 "Customer Opt Out" from Rejoiner.

Add your action

An action happens after the trigger—such as "Add Participant" in Viral Loops.

You’re connected!

Zapier seamlessly connects Rejoiner and Viral Loops, 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.

Customer Opt Out
Triggers when a customer opts out.
Trigger
Instant
Try It
- Email
- Phone
- First Name
- Custom Fields
Action
Write
- Email
  Required
Action
Write
- Email
  Required
Action
Write
- Email
  Required
Action
Write

- Email
  Required
- Session Metadata
Action
Write
- Email
  Required
- First Name
- Last Name
- Address Line 1
- Address Line 2
- City
- State
- Zip Code
Action
Write

New Conversion Count
Triggers when the conversion count of a participant changes, eg. if they go from 5 conversions to 6. Available only for the Milestone Referral, and Altruistic Referral templates.
Trigger
Instant
Try It
New Participant
Triggers when a new participant is added to your campaign. Available in all templates.
Trigger
Instant
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Reward Redeemed
Triggers when a reward is redeemed via the Campaign Dashboard or the API. Available only for the Milestone Referral, Refer a Friend and Viral Loops for Shopify templates.
Trigger
Instant
Try It
- Email
  Required
Action
Write

- Email
  Required
- Preference Tags
  Required
Action
Write
- Email
  Required
- Cart Value
- Cart Item Count
- Promo
- Order Number
- Return URL
- Product ID
- Product Name
- Product Price
- Product Description
- Quantity
- Total Price
- Product URL
- Product Image URL
Action
Write
- Email
  Required
Action
Write
- Email
  Required
Action
Write
- Email
  Required
- Preference Tags
  Required
Action
Write
- Email
  Required
- Metadata Update
  Required
Action
Write
New Conversion
Triggers when a participant from your campaign is converted. Available only for the Universal Referral, Milestone Referral, Online-to-Offline and Altruistic Referral templates.
Trigger
Instant
Try It
Milestone Reached
Triggers when a participant reaches a milestone. Available for the Milestone Referral and Viral Loops for Shopify templates.
Trigger
Instant
Try It
New Referral Count
Triggers when the referral count of a participant changes, eg. if they go from 5 referrals to 6. Available for all templates.
Trigger
Instant
Try It
- Email
  Required
- First name
- Last name
- Referral code
Action
Write
- Participant's Email
  Required
Action
Write

For AI agents & developers

Use Rejoiner and Viral Loops with AI agents and code

Beyond Zap workflows. Call Rejoiner and Viral Loops 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 Rejoiner and Viral Loops actions as tools in any MCP client. Authenticate once, then call them in natural language.

Example actions on this page

Add Customer Preference Tags
Add Participant

Works with

Claude · ChatGPT · Cursor · any MCP-compatible client

Connect Zapier MCP

Typescript

Call from code with the Zapier SDK

Trigger Rejoiner and Viral Loops 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({ /* rejoiner / viral-loops 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 Rejoiner and Viral Loops 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.

Make work flow with AI

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

Learn about AI automation

About Rejoiner

Rejoiner is the only email marketing solution that's accountable for your entire email program. Merchants use it to send automated and triggered lifecycle email campaigns (cart & browse abandonment, welcome series, win back and more) to the right person at the right time.

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Related categories

Marketing

About Viral Loops

Viral Loops is a referral marketing platform for busy marketers and founders.