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Mailchimp Transactional Zapier integrationAutomate Mailchimp Transactional with Zapier.

The Mailchimp Transactional Zapier integration gives you 1 trigger and 3 actions, and no search. The trigger is instant, the actions send emails, plain or from a template. Here is what each one does, what it costs and where it goes wrong.

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Overview

What the Mailchimp Transactional Zapier integration does for you

It connects the service that sends your one-to-one emails to the rest of your tools. Other apps can ask it to send a message, and it can tell other apps what happened to the messages it sent. Each link is a Zap: one starting event, then one or more steps that run each time.

Emails sent by your other tools. A new signup in your form tool can fire Send Email, with your sender name and address, so the welcome message leaves without anyone writing it.

Branded messages without rebuilding them. Send Template reuses a template you already designed in Mailchimp Transactional and fills its variables with data from the earlier steps.

A record of what happened after sending. New Catch Hook picks up the events Mailchimp Transactional sends out and reports them instantly, on every plan. Send them to a spreadsheet and your team can read them without opening the sending dashboard.

What Zapier does not do here: there is no search, so a Zap cannot look up a past message or a template's content. Nothing sent before the Zap was switched on is picked up. And beyond the two sending actions, the only way further is API Request (Beta), which is a technical tool, not a form to fill.

Working with n8n instead? See our Mailchimp Transactional n8n integration page.

Vocabulary

Zapier vocabulary in one minute

Eight words come back throughout this page. Here they are, in plain English.

Zap
The automation you build on Zapier: one starting event, then one or more steps that run every time it happens.
Trigger
The event in an app that starts the Zap. Once the Zap is switched on, Zapier waits for that event.
Action
What the Zap does after it starts: the step that sends, writes or updates something in an app for you.
Task
What Zapier bills: one action your Zap completes successfully. Your monthly allowance counts these.
Instant trigger
A trigger the app reports itself: it calls Zapier when the event happens, so nothing waits for a timer.
Polling trigger
A trigger Zapier checks on a timer, asking the app for new items at a set interval. None of this app's work that way.
Filter
A step that lets the Zap continue only when the incoming data meets your condition, and stops it otherwise.
Multi-step Zap
Any Zap beyond one trigger and one action. A filter or a second action makes one, and it needs a paid plan.
Cost

What it costs, in tasks

The trigger is free. Each email that one of the three actions sends successfully costs one task.

  • Trigger0 task
  • Successful action1 task each
  • Failed actionNot counted
  • Free plan100 tasks a month, two-step Zaps only
  • This appNot reserved for paid plans, works on Free

A Zap that sends a welcome email costs one task per signup; if it also adds a row somewhere, two. An action that fails is not counted. The free plan gives you 100 tasks a month and unlimited Zaps, each limited to two steps: one trigger, one action. The interval grid below is the general rule for polling triggers; it does not apply to New Catch Hook, which is instant on every plan. Sending is where the tasks go, so count your emails before you count your Zaps.

Connect

Connect your Mailchimp Transactional account

  1. 01

    Open the Apps page

    In Zapier, go to Apps and click + Add connection. A connection is your Mailchimp Transactional account linked to Zapier once, then reused by every step that sends through it.

  2. 02

    Pick Mailchimp Transactional

    Search Mailchimp Transactional in the dialog, select it, then click Add connection. Make sure the name in the list reads Mailchimp Transactional before you confirm.

  3. 03

    Sign in and grant access

    Sign in to Mailchimp Transactional in the tab that opens and allow Zapier to use the account. You need an account on the app, plus read or write access on anything you do not own yourself and want the Zap to touch.

First Zap

Your first Zap: tell the team about sending events

GoalThe sending events you care about reach your team chat the moment Mailchimp Transactional reports them.

  1. 01

    Build the Zap

    Create a Zap, pick Mailchimp Transactional as the app and New Catch Hook as the event, then choose your connection to the sending account.

  2. 02

    Test the trigger

    Run the test and read what comes back before you map anything. The fields you see are the ones Mailchimp Transactional actually sends, not a guess.

  3. 03

    Add the filter

    Click the plus icon, pick Filter, then set the field, the rule and the value that mark the events you want. Use a text rule on a text field. The filter makes the Zap multi-step, so it needs a paid plan.

  4. 04

    Add the message

    Add your chat tool as the action and map the fields from the event into the message. Keep it short: what happened, to which recipient, using what the test returned.

  5. 05

    Test, then publish

    Test each step and check the message in your chat. When it looks right, click Publish. Because the trigger is instant, each matching event goes through right away.

Triggers

The Mailchimp Transactional trigger

1 event starts a Zap when something happens in Mailchimp Transactional, and one of them is instant: the app calls Zapier straight away, whatever your plan.

1

New Catch Hook

Instant trigger

In Zapier“Catch and trigger off of any webhook that Mandrill sends.”

Catches the event notices Mailchimp Transactional sends out about your messages, whatever kind they are, and starts a Zap with each one. It is the only way, on Zapier, to get information out of this app rather than into it.

How it fires
the app tells Zapier the moment it happens, so the Zap starts right away, whatever your plan
When to use it
when your team or another tool needs to know what happened to the emails you sent, without logging into the sending dashboard.
Watch out
one trigger covers every kind of event, so check at the test what arrives, and add a filter if you only want some of them.
Actions

The 3 Mailchimp Transactional actions

Mailchimp Transactional gives you 3 actions. For each one: what it does for you, when to reach for it, and what to watch out for.

1

Send Email

Action

In Zapier“Send an email through Mandrill's system!”

Sends one email you compose in the Zap: sender name, sender address, recipients and subject are all required. You can also switch open and click tracking on.

When to use it
for simple messages whose wording can live in the Zap, like a notice after a form is filled in.
Watch out
several recipients go in one field, separated by commas.
2

Send Template

Action

In Zapier“Send an email via a template.”

Sends an email built on a template stored in your account, filling it with data from the earlier steps. The layout stays the one saved in the template.

When to use it
for messages that must look the same each time, such as receipts or confirmations.
Watch out
Template Variables and Merge Field are both required, one pair per line, written as key|{{field}}.
3

API Request (Beta)

Action

In Zapier“This is an advanced action which makes a raw HTTP request that includes this integration's authentication.”

An advanced step that sends a raw request of your own to Mailchimp Transactional, reusing the connection you already set up. You choose the method and the address.

When to use it
when the two sending actions do not cover what you need.
Watch out
it only reaches the app's own domains, and the required Stop on error setting decides whether a refused request halts the Zap.
When it breaks

When the Zap breaks

Zapier attaches a help article called Common Problems with Mailchimp Transactional to this app. The cases below are the limits every Zap shares.

Four of them matter with this app. If a Zap still misbehaves after these checks, open our Zapier troubleshooting guide.

  • Earlier events never come through

    A Zap only reacts to what happens after you switch it on. Events from emails sent before that are not picked up, and moving that history is a separate job.
  • A Zap that keeps setting itself off

    A Zap that writes into the place its own trigger watches can restart again and again and burn tasks. Before you publish, check where each action writes and test the Zap once.
  • A sudden flood is held back

    When a trigger suddenly returns a huge batch, after a bulk send or a migration, Zapier's flood protection can hold those items back instead of running them all.
  • Template fields left in the wrong format

    Send Template needs its variables one per line, as key and value separated by a pipe. With a different layout, check at the test that the values reach the template.
Need help

Need help automating Mailchimp Transactional with Zapier?

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FAQ

Mailchimp Transactional Zapier integration: questions

01Is the Mailchimp Transactional Zapier integration free?
Yes, it works on the free plan: Zapier does not reserve this app for paid plans. The free plan gives you 100 tasks a month and unlimited Zaps, each limited to two steps, one trigger and one action. A Zap that sends a welcome email from a form signup fits. A Zap that logs sending events and filters out the ones you do not care about does not, because the filter is a third step and needs a paid plan.
02How many tasks does a Mailchimp Transactional Zap use?
One task per action that succeeds, nothing for the trigger. If a Zap sends one email per new order, each order costs one task. If New Catch Hook feeds a spreadsheet, each event costs one task for the row. Add a second action to either Zap and the count doubles. An email that fails to go through is not counted against your plan, and receiving events from the app costs nothing on its own.
03Does it work in real time?
Yes. New Catch Hook is an instant trigger: Mailchimp Transactional tells Zapier when the event happens, and the Zap starts right away whatever your plan, free included. The interval grid of Zapier plans, every 15 minutes on Free down to 1 on Team and Enterprise, only concerns polling triggers, and this app has none. If timing matters to you, this is the setup that keeps it. On a free plan, this is the detail that matters most.
04What does it take to connect Mailchimp Transactional?
An account on Mailchimp Transactional, plus read or write access on anything you do not own yourself and want the Zap to touch. You add the connection from the Apps page of Zapier, with + Add connection, sign in to the app in the new tab and grant access. Before using Send Template, make sure the account already holds at least one template, since the action requires you to pick one from that list. The connection is then reused by every Zap that sends through this account.
05Can a Zap that sends emails trigger itself?
It can, as a general rule: a Zap that writes into the place its own trigger watches may set itself off again and again, and burn through your tasks. Whether a given pair of steps does it here is something to check at the test, not to assume. Before you publish a Zap that both listens to sending events and sends emails, test it once, look at what came back, and add a filter so that only the events you meant to handle go on to the sending step.
06What if the operation you need is not listed?
The Mailchimp Transactional page on Zapier shows the current list of operations, so check it first. If nothing fits, look at API Request (Beta). It sends a request of your own to Mailchimp Transactional, reusing the connection, with the method and address you choose. It only reaches the app's own domains, and the Stop on error setting decides whether a refused call stops the Zap. It is an advanced step: plan for someone who can read the app's reference documentation and test the result before anything goes live.
07Zapier, Make or n8n for Mailchimp Transactional?
Choose on criteria rather than on a ranking. On Zapier you get one instant trigger and three actions, so first check that your use case fits the two sending actions. Then think about volume: every email sent by a Zap is one task, which matters if you send a lot. Then the people: the tool your team already maintains is easier to keep running. And keep an eye on testing time: a sending Zap needs real events to check against.