How to connect 123FormBuilder and Mailerlite
Create a New Scenario to Connect 123FormBuilder and Mailerlite
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 123FormBuilder, triggered by another scenario, or executed manually (for testing purposes). In most cases, 123FormBuilder or Mailerlite will be your first step. To do this, click "Choose an app," find 123FormBuilder or Mailerlite, and select the appropriate trigger to start the scenario.

Add the 123FormBuilder Node
Select the 123FormBuilder node from the app selection panel on the right.

123FormBuilder
Configure the 123FormBuilder
Click on the 123FormBuilder node to configure it. You can modify the 123FormBuilder URL and choose between DEV and PROD versions. You can also copy it for use in further automations.
Add the Mailerlite Node
Next, click the plus (+) icon on the 123FormBuilder node, select Mailerlite from the list of available apps, and choose the action you need from the list of nodes within Mailerlite.

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Mailerlite

Authenticate Mailerlite
Now, click the Mailerlite node and select the connection option. This can be an OAuth2 connection or an API key, which you can obtain in your Mailerlite settings. Authentication allows you to use Mailerlite through Latenode.
Configure the 123FormBuilder and Mailerlite 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 123FormBuilder and Mailerlite 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.

JavaScript
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AI Anthropic Claude 3
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Mailerlite
Trigger on Webhook
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123FormBuilder
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Iterator
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Webhook response

Save and Activate the Scenario
After configuring 123FormBuilder, Mailerlite, 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 123FormBuilder and Mailerlite integration works as expected. Depending on your setup, data should flow between 123FormBuilder and Mailerlite (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect 123FormBuilder and Mailerlite
123FormBuilder + Mailerlite + Slack: When a new submission is received in 123FormBuilder, a new subscriber is created or updated in Mailerlite. Then, a message is sent to a Slack channel to notify the team about the new submission.
123FormBuilder + Mailerlite + Google Sheets: When a new submission is received in 123FormBuilder, a new subscriber is created or updated in Mailerlite. Subsequently, a new row is added to a Google Sheet with the subscriber's information.
123FormBuilder and Mailerlite integration alternatives
About 123FormBuilder
Streamline data collection by connecting 123FormBuilder to Latenode. Automatically trigger workflows when forms are submitted. Route form data to CRMs, databases, or email marketing tools. Use Latenode to validate entries, calculate scores, and manage follow-ups — automating processes with a no-code, scalable workflow.
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About Mailerlite
Use Mailerlite in Latenode to automate email marketing tasks. Add subscribers, send targeted campaigns, and track results based on triggers from your CRM, database, or e-commerce platform. Latenode’s visual editor and code blocks offer flexible control over message personalization and flow logic without complex coding or per-action pricing.
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See how Latenode works
FAQ 123FormBuilder and Mailerlite
How can I connect my 123FormBuilder account to Mailerlite using Latenode?
To connect your 123FormBuilder account to Mailerlite on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select 123FormBuilder and click on "Connect".
- Authenticate your 123FormBuilder and Mailerlite accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I add new 123FormBuilder submissions as Mailerlite subscribers?
Yes, you can! With Latenode, automatically add new 123FormBuilder form submissions as subscribers in Mailerlite, ensuring your email lists are always up-to-date. Save time and improve data accuracy.
What types of tasks can I perform by integrating 123FormBuilder with Mailerlite?
Integrating 123FormBuilder with Mailerlite allows you to perform various tasks, including:
- Automatically adding new form respondents to a specific Mailerlite group.
- Triggering personalized email campaigns based on form submission data.
- Updating subscriber information in Mailerlite from 123FormBuilder entries.
- Segmenting your Mailerlite audience based on 123FormBuilder responses.
- Sending thank you emails via Mailerlite after form submission.
How secure is data transferred between 123FormBuilder and Mailerlite?
Latenode uses secure connections to protect data during transfer between 123FormBuilder and Mailerlite, ensuring privacy and compliance with data protection standards.
Are there any limitations to the 123FormBuilder and Mailerlite integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Complex conditional logic within forms may require custom JavaScript.
- Attachment uploads from 123FormBuilder may need additional processing.
- Extremely high volumes of submissions may require optimization for optimal performance.