How to connect Postmark and Omnisend
Create a New Scenario to Connect Postmark and Omnisend
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 Omnisend will be your first step. To do this, click "Choose an app," find Postmark or Omnisend, 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 Omnisend Node
Next, click the plus (+) icon on the Postmark node, select Omnisend from the list of available apps, and choose the action you need from the list of nodes within Omnisend.


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Authenticate Omnisend
Now, click the Omnisend node and select the connection option. This can be an OAuth2 connection or an API key, which you can obtain in your Omnisend settings. Authentication allows you to use Omnisend through Latenode.
Configure the Postmark and Omnisend 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 Omnisend 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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AI Anthropic Claude 3
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Omnisend
Trigger on Webhook
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Webhook response

Save and Activate the Scenario
After configuring Postmark, Omnisend, 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 Omnisend integration works as expected. Depending on your setup, data should flow between Postmark and Omnisend (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 Omnisend
Postmark + Omnisend + Google Sheets: When a new email bounce is recorded in Postmark, the email address is checked against Omnisend. If the address is found in Omnisend, the email address and bounce reason are logged in a Google Sheet.
Omnisend + Postmark + Slack: When a contact unsubscribes in Omnisend, the workflow checks if the email address exists in Postmark. If the email exists in Postmark, a Slack message is sent to a designated channel to alert the marketing team.
Postmark and Omnisend 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 Omnisend
Use Omnisend in Latenode to automate email & SMS marketing based on real-time data. Connect e-commerce platforms and CRMs, then trigger personalized campaigns. Stop overspending on rigid marketing tools. Latenode's visual editor and flexible logic create scalable automation at a fraction of the cost.
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See how Latenode works
FAQ Postmark and Omnisend
How can I connect my Postmark account to Omnisend using Latenode?
To connect your Postmark account to Omnisend 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 Omnisend accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I track email bounces in Postmark and update contact properties in Omnisend?
Yes, you can! Latenode allows you to automatically update Omnisend contact properties based on Postmark bounce data. This ensures accurate segmentation and improved email deliverability.
What types of tasks can I perform by integrating Postmark with Omnisend?
Integrating Postmark with Omnisend allows you to perform various tasks, including:
- Adding new contacts to Omnisend from Postmark subscription confirmations.
- Triggering Omnisend welcome series upon successful Postmark transactional emails.
- Updating Omnisend contact tags based on Postmark email engagement.
- Sending Postmark transactional emails based on Omnisend segment updates.
- Automatically unsubscribing bounced email addresses in Omnisend.
How do I handle Postmark webhooks within a Latenode workflow?
Latenode's webhook trigger instantly captures data from Postmark, allowing you to process events and seamlessly integrate them into your automation workflows.
Are there any limitations to the Postmark and Omnisend integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Complex data transformations may require custom JavaScript code.
- Rate limits of Postmark and Omnisend APIs apply.
- Historical data migration between apps is not directly supported.