99Inbound
Simple form builder and form endpoint API for websites
About 99Inbound
99Inbound is an online form builder and form endpoint API that lets users create and publish web forms without code, then receive notifications via email or Slack for each submission. It supports both a visual drag-and-drop builder and a backend API for connecting existing HTML forms without iframes or JavaScript libraries.
Pros & Cons
Pros
- Very affordable with a generous free tier of 100 entries/month
- Dual mode — works as both a form builder and a backend form API
- No iframe or JS library required for form endpoint usage
- Slack and email notifications built in out of the box
- Simple and lightweight — extremely fast to set up
Cons
- Limited native integrations — relies heavily on Zapier for connections
- No conditional logic, multi-page forms, or advanced field types
- Entry limits on all plans can get expensive at high volume
- Small indie operation — less enterprise support infrastructure
- Basic analytics and reporting capabilities
Key Features
Drag-and-Drop Form Builder
Visual form editor for creating web forms without writing any code
Form Endpoint API
Connect existing HTML forms to 99Inbound without iframes or JavaScript libraries
Email Notifications
Receive email alerts for every form submission automatically
Slack Notifications
Post form submissions directly to any Slack channel in real time
Autoresponder Emails
Send automatic confirmation emails to form submitters
Spam Protection
Built-in spam and bot filtering to keep submissions clean
Webhooks
POST submission data to any HTTP endpoint for custom processing
Zapier Integration
Connect to thousands of apps via Zapier plus native Mailchimp and Close.io integrations
Pricing
- 100 entries/month
- Form builder
- Email notifications
- Spam protection
- 1,000 entries/month
- Slack notifications
- Autoresponders
- Unlimited integrations
- 5,000 entries/month
- Webhooks
- Priority support
- Unlimited integrations
- 20,000 entries/month
- All features
- Priority support
- Unlimited integrations
Best For
Static Site Contact Forms
Add contact or lead capture forms to static websites and JAMstack projects via the API
Small Business Lead Collection
Collect leads and inquiries without investing in complex form software
Newsletter Signups
Build email signup forms with automatic Mailchimp synchronization
Slack Lead Alerts
Route form submissions to Slack channels for immediate sales team notification
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