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

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


Harvest

Add the Mailgun Node
Next, click the plus (+) icon on the Harvest node, select Mailgun from the list of available apps, and choose the action you need from the list of nodes within Mailgun.


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Mailgun


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


Save and Activate the Scenario
After configuring Harvest, Mailgun, 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 Harvest and Mailgun integration works as expected. Depending on your setup, data should flow between Harvest and Mailgun (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect Harvest and Mailgun
Harvest + Slack + Mailgun: When a new time entry is created in Harvest, a Slack notification is sent summarizing the billable hours. Additionally, a confirmation email is sent to the employee via Mailgun.
Mailgun + Harvest + Google Sheets: When a new bounce is detected in Mailgun, the email address is logged in a Google Sheet along with the corresponding Harvest user ID, facilitating employee contact updates.
Harvest and Mailgun integration alternatives

About Harvest
Automate time tracking with Harvest in Latenode. Sync time entries to accounting, payroll, or project management. Create flows that auto-generate invoices or trigger alerts for budget overruns. Latenode provides the flexibility to connect Harvest data to other apps and add custom logic, avoiding manual updates and delays.
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About Mailgun
Use Mailgun in Latenode to automate email sending within your workflows. Trigger emails based on data changes, form submissions, or scheduled events. Latenode lets you filter, format, and personalize messages using data from other apps, creating dynamic campaigns and notifications without complex coding. Scale your outreach affordably by paying only for execution time.
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See how Latenode works
FAQ Harvest and Mailgun
How can I connect my Harvest account to Mailgun using Latenode?
To connect your Harvest account to Mailgun on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select Harvest and click on "Connect".
- Authenticate your Harvest and Mailgun accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I send invoices via email using Harvest and Mailgun?
Yes, you can! Latenode's visual editor makes it simple. Automatically send customized invoices through Mailgun when new time entries are approved in Harvest, saving time and improving client communication.
What types of tasks can I perform by integrating Harvest with Mailgun?
Integrating Harvest with Mailgun allows you to perform various tasks, including:
- Automatically sending thank-you emails to clients upon invoice payment.
- Creating monthly reports of billable hours and emailing them to project managers.
- Triggering personalized onboarding emails for new Harvest users.
- Sending payment reminders to clients with overdue invoices.
- Notifying team leads via email when project budgets approach their limit.
How does Latenode handle Harvest API rate limits efficiently?
Latenode intelligently manages API calls, using queues and error handling to avoid rate limits and ensure reliable automation, even at high volumes.
Are there any limitations to the Harvest and Mailgun integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Complex custom reporting may require JavaScript knowledge.
- Attachment size is limited by Mailgun's email sending limits.
- Real-time synchronization depends on Harvest's API update frequency.