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MailerCheck Zapier integrationAutomate MailerCheck with Zapier.

The MailerCheck Zapier integration gives you 0 triggers, 1 action and 0 searches. One step, Verify an Email Address, that checks an address before it reaches your list. It never starts a Zap by itself, so another app has to do that.

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Overview

What the MailerCheck Zapier integration is for

The MailerCheck Zapier integration puts an email check in the middle of your automations. A Zap (the automation you build on Zapier: one trigger, then one or more actions) receives an address from another app, asks MailerCheck to verify it, and passes the verdict to the next step.

Three results come out of that single action. A form that stops feeding typos to your list: each new submission goes through Verify an Email Address before it reaches your email tool. A CRM that only keeps reachable contacts: the check sits between a new contact and the step that creates it, and a filter drops what fails. A sheet with a verdict next to every address: the Zap writes MailerCheck's answer into a column, so whoever cleans the list sees it.

Here is what Zapier does not do for MailerCheck. There is no trigger, so MailerCheck never starts a Zap: you always need another app at the top. There is no search, and no bulk step: each run checks one address. And the action does not decide anything on its own; it returns a result, and a filter you set decides what happens next.

The same app has its own page for another platform: see our MailerCheck Make integration page. If you are still weighing the platform itself, read our Zapier review.

Vocabulary

Zapier vocabulary in one minute

Seven words carry this page. Here they are once, in plain terms.

Zap
The automation itself: one trigger at the top, then one or more actions that run each time that trigger event happens.
Trigger
The event that starts the Zap. MailerCheck has none, so here it is always an event in another app, like a new form entry.
Action
What the Zap does once started: the step that writes, sends or checks something for you, such as verifying an address.
Task
The unit Zapier bills: one action that completes successfully. Your plan's number is a count of those, nothing more.
Polling vs instant
Polling: Zapier asks an app for new items at a fixed interval. Instant: the app tells Zapier the moment the event happens.
Filter
A step that lets the Zap carry on only when what arrived meets a condition you set, such as a passing check, and stops it otherwise.
Search step
A step that looks up something already in an app so later steps can reuse it. MailerCheck offers none on Zapier.
Cost

What a MailerCheck Zap costs you

MailerCheck is not a premium app, so it works from the free plan. The bill follows actions, never the trigger.

  • Premium appNo, works on the free plan
  • Free plan100 tasks a month, two-step Zaps
  • BilledEach successful action
  • TriggersNone, another app starts the Zap

The trigger of the other app costs nothing. Verify an Email Address counts as one task each time it succeeds, and so does every other action in the Zap. A failed action is not counted. The free plan gives 100 tasks a month and unlimited Zaps, but each Zap stops at two steps. A check only pays off when a later step uses its result, and adding a filter or a second action makes the Zap multi-step, which needs a paid plan. The interval grid below applies to the polling trigger of the app that starts the Zap; MailerCheck has no trigger of its own.

Connect

Connect your MailerCheck account to Zapier

  1. 01

    Open the Apps page

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

  2. 02

    Pick MailerCheck

    Type MailerCheck in the search box of the dialog, select it, then click Add connection. You need a MailerCheck account that already exists, in your name.

  3. 03

    Sign in and allow access

    A tab opens on MailerCheck. Sign in, then grant Zapier access to the account. If the account belongs to someone else on your team, make sure you have the access needed to run checks from it.

First Zap

Your first Zap: check every form sign-up before it lands

GoalEach new form submission is verified by MailerCheck, and only addresses that pass the condition you choose go on to your CRM, so the contact list stays clean from the start.

  1. 01

    Create the Zap and pick the trigger

    Create a new Zap. In the trigger slot, pick your form app and its new-submission event, then the connection and the form to watch.

  2. 02

    Test the trigger

    Run the test. Zapier brings back the three most recent submissions, so you work from a real address rather than a blank sample.

  3. 03

    Add the MailerCheck check

    In the action slot, pick MailerCheck and Verify an Email Address. Map the submission's email into Email Address, then test the step and read the result it returns.

  4. 04

    Filter, then create the contact

    Click the plus icon, pick Filter and fill its three boxes: field, rule, value, using the result of the check. Then add your CRM's create-contact action. The Zap is multi-step, so it needs a paid plan.

  5. 05

    Test, then publish

    Test each step, check that the contact arrived in the CRM, then click Publish to switch the Zap on. From then on, every new submission is checked before anything else happens.

Actions

MailerCheck actions on Zapier

MailerCheck gives you 1 action. For each one: what it does for you, when to reach for it, and what to watch out for.

1

Verify an Email Address

Action

In Zapier“Filter out bad emails with typos, errors, catch-all domains, and more.”

Sends one address to MailerCheck and brings back its verdict, so you can catch typos, invalid addresses and catch-all domains before they reach your list. The result becomes fields that later steps and filters can read.

When to use it
between the step that collects an address and the step that stores it, whether that is a form, a sheet or a CRM.
Watch out
Email Address is required, and each run checks a single address, so a batch of addresses means one run, and one task, per address.
When it breaks

When a MailerCheck Zap breaks

Zapier ties no help article to MailerCheck, so the traps below are the ones every Zap shares. They hit the app that starts the Zap as much as the check itself.

Most surprises come from what a Zap does not do rather than from an error message. Keep these four in mind before you publish, and see Zapier troubleshooting when a run goes wrong.

  • Existing addresses are never checked

    A Zap only reacts to what happens after you switch it on. Addresses already in your list are not verified; checking that backlog is a separate job.

  • A Zap that sets itself off

    Writing the verdict back into the same sheet whose new rows start the Zap can set it off again and again, and burn through your tasks.

  • A bulk import gets held back

    If the starting app suddenly returns a huge batch, after an import for example, Zapier's flood protection can hold those runs back instead of checking them all.

  • The same row is not checked twice

    On a polling trigger, Zapier remembers what it already saw, so the same item never starts the Zap, or the check, a second time.
Need help

Need help automating MailerCheck with Zapier?

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FAQ

MailerCheck and Zapier: frequent questions

01Is the MailerCheck Zapier integration free?
On the Zapier side, yes: MailerCheck is not a premium app, so it runs on the free plan. That plan gives 100 tasks a month and unlimited Zaps, but each Zap stops at two steps, one trigger and one action. The catch: a check only pays off when a later step uses its result, and adding a filter or a second action makes the Zap multi-step, which needs a paid plan. The form-to-CRM Zap on this page is one of those.
02How many tasks does a MailerCheck Zap use?
One task each time Verify an Email Address succeeds, plus one for every other action that succeeds in the same run. The trigger costs nothing. In the form-to-CRM Zap, a submission that passes the filter costs two tasks, the check and the contact creation; one that fails the filter costs one, the check alone. Failed actions are not billed. So the number to watch is how many addresses come in, multiplied by the actions each one goes through.
03Does MailerCheck work in real time with Zapier?
MailerCheck has no trigger, so the timing depends entirely on the app that starts the Zap. If that app has an instant trigger, it tells Zapier the moment a new address arrives and the check follows straight away. If its trigger works by polling, Zapier looks at regular intervals that depend on your plan: 15 minutes on Free, 2 on Professional, 1 on Team and Enterprise. The check itself runs as soon as its turn comes in the Zap.
04What does it take to connect MailerCheck to Zapier?
A MailerCheck account that already exists and a Zapier account. From the Apps page, click + Add connection, search for MailerCheck, sign in on the tab that opens and grant access. You also need a second app to start the Zap, one that collects an email address, since Verify an Email Address requires one. If that app's data belongs to someone else, you need read access on it as well. Test the trigger first, so the email field is there to map.
05Can MailerCheck block a bad address on its own?
No. Verify an Email Address checks the address and returns a result; it does not stop anything by itself. The Zap carries on to the next step whatever the verdict, unless you put a filter after the check. Set that filter on the result field, with the rule and value that match what you want to keep. Bear in mind the rules are typed: a text rule only works on text, which is a common reason a filter never passes.
06What if the MailerCheck operation you need is not on Zapier?
Then the integration does not cover it. Here the gaps are wide: one action, no trigger, no search, and no way to check a whole list in one run. If you need to verify an existing list, that work happens outside this Zap, since a Zap only sees new items. For new addresses, the single action is usually enough when it sits at the right place in the Zap, with a filter after it.
07Zapier, Make or n8n for MailerCheck?
There is no single winner, only criteria. Coverage: on Zapier, MailerCheck has one action and no trigger or search; the Make page linked above shows what Make offers, and n8n can be checked the same way. Cost: Zapier bills each successful check as a task, so the bill follows the number of addresses that come in. Free plan: two-step Zaps cost nothing, but the usual check-then-filter Zap needs a paid plan. Existing lists: a Zap only sees new items, whatever the platform you pick for the rest.
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