LeadDuo Form Integration Guide
📱 From form to phone in under a second
LeadDuo delivers new leads instantly via SMS and email — no backend, no setup, just results.
Embed forms on any website and receive real-time alerts. Works with Webflow, WordPress, Wix, React, and any platform that supports HTML.
🚀 Quick Start
Ready to get started? Create your first form to get the HTML snippet.
Integration Guide
LeadDuo offers two integration methods: Embed.js (recommended) for custom forms with theming, or Basic HTML for simple forms.
1. Create Your Form
After signing up, create a form in your dashboard. You'll get a unique form ID and API key.
2. Choose Your Integration Method
✨ Embed.js (Recommended)
Use this if you're using Form Builder, LeadQualify, or custom theming:
<!-- LeadDuo Embed Form -->
<div id="leadduo-form"></div>
<script src="https://cdn.leadduo.io/embed/v1.js"></script>
<script>
LeadDuo.init('leadduo-form', {
formId: 'YOUR_FORM_ID',
formKey: 'YOUR_LD_KEY'
});
</script>📝 Basic HTML Form
Use this for simple forms without custom styling:
<form action="https://api.leadduo.io/api/v1/form/YOUR_FORM_ID" method="POST"> <input type="hidden" name="ld_key" value="YOUR_LD_KEY" /> <input type="email" name="email" placeholder="Email" required /> <input type="text" name="name" placeholder="Name" /> <textarea name="message" placeholder="Message"></textarea> <button type="submit">Submit</button> </form>
3. Platform-Specific Setup
Webflow: Add an HTML embed element with your form code
WordPress: Use a custom HTML block or plugin
Wix: Add an HTML component to your page
Squarespace: Use a code block in your page
React/Next.js: Use the embed.js script with useEffect hook
Advanced Features
🎨 Form Builder (Starter+ Plans)
Design custom forms with up to 10 fields including 5 standard templates and 5 custom fields. Drag-and-drop reordering, field validation, and modern styling included.
Configure in Form Builder tab → Add custom fields, reorder, and preview your form
🎯 LeadQualify (Pro Plan)
Pre-qualify leads with up to 3 targeted questions before showing your main form. Automatically score leads (0-15 points) and filter unqualified prospects. Choose to skip or collect unqualified leads.
Configure in LeadQualify tab → Add questions, set scoring, and define threshold
🎨 Custom Theming (Pro Plan)
Match your brand with custom colors, fonts, border radius, and button styles. Support for light/dark modes and full CSS customization.
Configure in Form Builder tab → Theme section
💬 Thank You Messages & Redirects (Pro Plan)
Choose between custom HTML thank you messages or redirect users to your own page. Perfect for tracking pixels, upsells, or custom messaging.
Configure in Form Builder tab → After Form Submission toggle
🤖 SmartResponse (Pro Plan)
Automatically send professional, branded confirmation emails to every new lead — instantly after form submission.
SmartResponse ensures your leads feel acknowledged while you stay focused on real conversations.
Configure in Form Builder → SmartResponse
Enable it, pick a template, or write your own HTML using dynamic variables like {{NAME}} and {{EMAIL}}.
Key Features
- ⚡ Sends automatic replies seconds after submission
- 💌 Supports dynamic placeholders (
{{NAME}},{{COMPANY}}, etc.) - 🎨 Matches your form's brand theme and colors
- 🧠 AI Template Generator for one-click professional replies
Tip: Combine SmartResponse with LeadQualify to automatically reply differently to high- vs low-intent leads.
✅ Webhooks (Growth+ Plans)
Send form submissions to your CRM or app in real-time with secure HMAC signatures. Includes qualification data for LeadQualify forms.
View webhook documentation →✅ API Access (Growth+ Plans)
Programmatically retrieve submissions with full LeadQualify data. Export to CSV with qualification scores and responses included.
View API documentation →Frequently Asked Questions
Q: Can I use LeadDuo without code?
A: Yes! LeadDuo provides a ready-to-use HTML snippet. Just copy and paste it into your website—no backend, no JavaScript, no API keys needed. It works anywhere you can add HTML.
Q: How fast are lead alerts delivered?
A: SMS and email alerts are sent within 1-2 seconds of form submission. Our infrastructure is optimized for speed—you'll know about new leads before they've even closed their browser.
Q: How do I connect LeadDuo forms to my CRM?
A: Use Webhooks in the Growth or Pro plan. You'll receive POST requests to your endpoint in real-time with full form data. Perfect for Salesforce, HubSpot, or custom CRMs. View webhook documentation →
Q: Does LeadDuo work with my website platform?
A: Yes! LeadDuo works with any platform that supports HTML: Webflow, WordPress, Wix, Squarespace, Shopify, custom sites, and more. If you can add HTML, you can use LeadDuo.
Q: What about spam protection?
A: Built-in! LeadDuo includes honeypot fields and rate limiting to block bots. Spam submissions are filtered before they reach your phone, saving your SMS credits and sanity.
Q: What's the difference between Form Builder and LeadQualify?
A: Form Builder (Starter+) lets you design custom forms with up to 10 fields and custom styling. LeadQualify (Pro) adds pre-qualification questions before your form to filter and score leads automatically. Use Form Builder for custom forms, add LeadQualify to pre-qualify high-value prospects.
Q: Can I customize the form appearance to match my brand?
A: Yes! Pro plan includes full theme customization: colors, fonts, border radius, button styles, and light/dark modes. You can also add custom thank you messages or redirect to your own page after submission.
⚡ Upgrade to Growth to unlock webhooks & API access
Connect to Zapier, Salesforce, Slack, and 6,000+ apps. Real-time integrations for growing businesses.
Coming Soon
• Multi-language form support
• Advanced spam filtering with ML
• Custom domain support
• A/B testing for forms
• Advanced analytics dashboard