Get Your Formstack API Key
- Log in to your Formstack account
- Navigate to Settings then API
- Click Generate New Application
- Name it “Email Calculator”
- Complete the OAuth flow or use Personal Access Token
- Copy your Access Token
- Note your Form ID (found in form settings or URL)
Tip: Personal Access Tokens are easier to set up than OAuth for simple integrations.
Connect to Email Calculator
Paid plan required. Formstack integration is available on paid accounts. View pricing
- Go to your Email Calculator Settings page
- Find the API Integrations section
- Select Lead Platforms from the dropdown
- Choose Formstack
- Paste your Access Token
- Enter your Form ID
- Click Verify & Save
Create Your First Report
- Navigate to your Dashboard
- Click New Report
- Select Formstack as your data source
- Choose your date range (last 7, 30, or 90 days)
- Select the forms you want to analyze
- Click Generate Report
Track UTM Parameters
To attribute Formstack submissions to specific email campaigns, add hidden fields:
- Add a Hidden Field named “utm_source”
- Add a Hidden Field named “utm_medium”
- Add a Hidden Field named “utm_campaign”
- Set field values to Query String Parameter with matching parameter names
Email Calculator will automatically extract UTM parameters from hidden fields to attribute submissions to campaigns.
Formstack data available via Email Calculator
- • Submission ID and timestamp
- • Form ID and form title
- • Email address (if collected)
- • Name and all form field data
- • Remote IP address
- • UTM parameters from hidden fields