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

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


Mailerlite

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


Mailerlite
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123FormBuilder

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

Save and Activate the Scenario
After configuring Mailerlite, 123FormBuilder, 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 Mailerlite and 123FormBuilder integration works as expected. Depending on your setup, data should flow between Mailerlite and 123FormBuilder (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect Mailerlite and 123FormBuilder
123FormBuilder + Mailerlite + Slack: When a new submission is received in 123FormBuilder, the subscriber is added or updated in Mailerlite, and a notification is sent to a Slack channel.
123FormBuilder + Mailerlite + Google Sheets: When a new submission is received in 123FormBuilder, the subscriber is added or updated in Mailerlite, and the submission data is added as a new row in Google Sheets.
Mailerlite and 123FormBuilder integration alternatives

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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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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See how Latenode works
FAQ Mailerlite and 123FormBuilder
How can I connect my Mailerlite account to 123FormBuilder using Latenode?
To connect your Mailerlite account to 123FormBuilder on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select Mailerlite and click on "Connect".
- Authenticate your Mailerlite and 123FormBuilder accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I add form respondents to a Mailerlite group?
Yes, you can! With Latenode, automatically add new 123FormBuilder respondents to Mailerlite. Nurture leads with targeted email campaigns, ensuring efficient marketing and engagement.
What types of tasks can I perform by integrating Mailerlite with 123FormBuilder?
Integrating Mailerlite with 123FormBuilder allows you to perform various tasks, including:
- Automatically adding new form submissions to a Mailerlite subscriber group.
- Updating subscriber information in Mailerlite based on form responses.
- Triggering email sequences in Mailerlite upon form submission.
- Segmenting subscribers in Mailerlite based on their 123FormBuilder answers.
- Sending personalized confirmation emails via Mailerlite after form submission.
How secure is my Mailerlite data when using Latenode?
Latenode employs robust security measures, including encryption and access controls, to protect your Mailerlite data during integration.
Are there any limitations to the Mailerlite and 123FormBuilder integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Complex conditional logic in forms may require custom JavaScript code blocks.
- Rate limits imposed by Mailerlite and 123FormBuilder may affect high-volume workflows.
- Certain advanced Mailerlite features might not be directly supported without custom API calls.