How to connect Postmark and ZeroBounce
Create a New Scenario to Connect Postmark and ZeroBounce
In the workspace, click the “Create New Scenario” button.

Add the First Step
Add the first node – a trigger that will initiate the scenario when it receives the required event. Triggers can be scheduled, called by a Postmark, triggered by another scenario, or executed manually (for testing purposes). In most cases, Postmark or ZeroBounce will be your first step. To do this, click "Choose an app," find Postmark or ZeroBounce, and select the appropriate trigger to start the scenario.

Add the Postmark Node
Select the Postmark node from the app selection panel on the right.


Postmark

Configure the Postmark
Click on the Postmark node to configure it. You can modify the Postmark URL and choose between DEV and PROD versions. You can also copy it for use in further automations.
Add the ZeroBounce Node
Next, click the plus (+) icon on the Postmark node, select ZeroBounce from the list of available apps, and choose the action you need from the list of nodes within ZeroBounce.


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Authenticate ZeroBounce
Now, click the ZeroBounce node and select the connection option. This can be an OAuth2 connection or an API key, which you can obtain in your ZeroBounce settings. Authentication allows you to use ZeroBounce through Latenode.
Configure the Postmark and ZeroBounce Nodes
Next, configure the nodes by filling in the required parameters according to your logic. Fields marked with a red asterisk (*) are mandatory.
Set Up the Postmark and ZeroBounce Integration
Use various Latenode nodes to transform data and enhance your integration:
- Branching: Create multiple branches within the scenario to handle complex logic.
- Merging: Combine different node branches into one, passing data through it.
- Plug n Play Nodes: Use nodes that don’t require account credentials.
- Ask AI: Use the GPT-powered option to add AI capabilities to any node.
- Wait: Set waiting times, either for intervals or until specific dates.
- Sub-scenarios (Nodules): Create sub-scenarios that are encapsulated in a single node.
- Iteration: Process arrays of data when needed.
- Code: Write custom code or ask our AI assistant to do it for you.

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Save and Activate the Scenario
After configuring Postmark, ZeroBounce, and any additional nodes, don’t forget to save the scenario and click "Deploy." Activating the scenario ensures it will run automatically whenever the trigger node receives input or a condition is met. By default, all newly created scenarios are deactivated.
Test the Scenario
Run the scenario by clicking “Run once” and triggering an event to check if the Postmark and ZeroBounce integration works as expected. Depending on your setup, data should flow between Postmark and ZeroBounce (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect Postmark and ZeroBounce
Postmark + ZeroBounce + Google Sheets: When a new email is sent via Postmark, the recipient's email address is validated using ZeroBounce. The validation result, including the email address and validity status, is then added as a new row in a Google Sheet for auditing and record-keeping.
ZeroBounce + Postmark + Slack: When ZeroBounce validates an email address and detects it as invalid, the corresponding email is suppressed from Postmark to prevent sending further emails. A notification is then sent to the marketing team on Slack to inform them about the suppression.
Postmark and ZeroBounce integration alternatives

About Postmark
Use Postmark in Latenode to automate transactional emails. Connect events from your apps to trigger personalized messages, like order confirmations or password resets. Benefit from Postmark’s deliverability, plus Latenode's visual workflow builder and flexible logic to filter events and enrich email data, ensuring accurate and timely communication.
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About ZeroBounce
Use ZeroBounce in Latenode to automatically validate email addresses in your workflows. Stop sending emails to invalid addresses and improve deliverability. Integrate it with your CRM or forms to clean data on entry. Automate list hygiene and get better results by removing bounces, all within visual Latenode flows.
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FAQ Postmark and ZeroBounce
How can I connect my Postmark account to ZeroBounce using Latenode?
To connect your Postmark account to ZeroBounce on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select Postmark and click on "Connect".
- Authenticate your Postmark and ZeroBounce accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I automatically verify new Postmark email subscribers using ZeroBounce?
Yes, you can! Latenode allows instant verification, preventing bounces and improving deliverability. Integrate Postmark & ZeroBounce using a no-code flow for high-quality lists.
What types of tasks can I perform by integrating Postmark with ZeroBounce?
Integrating Postmark with ZeroBounce allows you to perform various tasks, including:
- Verifying email addresses before sending via Postmark.
- Removing invalid emails from Postmark suppression lists.
- Triggering alerts for high-risk email addresses.
- Segmenting email lists based on ZeroBounce validation results.
- Automating cleaning of inactive Postmark subscribers.
WhatPostmarkeventscantriggerZeroBounceverificationflows?
Bounce, spam complaint, or unsubscribe events in Postmark can trigger ZeroBounce validation. This maintains a clean and engaged email list using automation.
Are there any limitations to the Postmark and ZeroBounce integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Rate limits from Postmark and ZeroBounce apply.
- Complex validation rules might require custom JavaScript.
- ZeroBounce credits are required for email verification.