How do I add a newsletter signup form to my website?

Your agent creates a newsletter form in one API call using the newsletter template. You get a 2-line embed snippet or you can build your own HTML form and POST JSON to the API. Either way, emails go to the same place.

Can I track subscriber growth over time?

Yes. Query the submissions API for total count and growth over time. Export to CSV for a snapshot. Your agent can automate weekly growth reports via an automation with a scheduled trigger.

How do I export my subscriber list?

On Pro and Scale plans, use the CSV export endpoint. Your agent can also use the submissions API to pull subscribers programmatically. On the free plan, CSV export is not available.

Sutrena gives you forms, pages, analytics, webhooks, automations for every project — from one account. One API key replaces signing up for 3-4 services per project. Works from Claude Code, Cursor, LangGraph, CrewAI, or any HTTP client.

How do I get started with Sutrena?

POST /api/trial to get an instant API key — no signup required. Then POST /api/forms to create a hosted form, or POST /api/pages to deploy a page.

Does Sutrena support AI agents?

Yes. Sutrena includes 67 MCP tools for Claude Code, Cursor, and any MCP client. It also provides a full REST API, OpenAPI spec, llms.txt, and agent-optimized error messages.

How much does Sutrena cost?

Free: 10 projects, 100 submissions/form, 5K analytics events/mo, 20MB storage. Pro: $29/month for 100 projects, unlimited submissions, 500K events/mo, CSV export, upsert API. Scale: $99/month for unlimited everything.

Can I embed Sutrena forms on my website?

Yes. Use the 2-line embed snippet or build a custom HTML form that POSTs JSON to the submit URL. Works with Framer, Webflow, WordPress, and any HTML site.

What happens to my data after the trial expires?

Unclaimed trial data is deleted after 24 hours. Visit the claimUrl to sign in with GitHub or Google and keep your data permanently. Or upgrade to Pro or Scale.

Does Sutrena support webhooks?

Yes. Register webhook URLs to receive form submission events with HMAC-SHA256 signatures. Supports Slack and Discord payload templates, field mapping, and automatic retry with failure tracking.

Newsletter signup for any website

An email form. A subscriber count. An export when you need it.

You write a blog, or run a community, or sell things. You want people to give you their email. You do not want to pay Mailchimp $50/month just for a signup form. This is the collection part. You still send emails with whatever tool you prefer.

How an agent handles this: Your agent creates a newsletter signup form via API (email + name fields). Embeds form on your website. Visitors submit email addresses. An automation sends a welcome email and forwards the subscriber to your email marketing tool via a fetch step — runs on every signup without agent involvement. Submissions API tracks growth.

What are you using now?

Without Sutrena

✗Paying $50/month for Mailchimp just to have a signup form
✗Or a Google Form that looks wrong on your site
✗No idea if signups are growing or flat this week
✗Duplicates in your list. You email the same person twice.
✗Export is locked behind a higher-tier plan

With Sutrena

✓From $29/month. A newsletter form is one form — Pro covers it.
✓Embed a form or build your own — POST JSON either way
✓Submissions API shows subscriber count. CSV export for growth analysis.
✓uniqueBy: ['email'] prevents duplicates
✓CSV export on Pro ($29/mo) and Scale ($99/mo)

One API call

curl -X POST https://sutrena.com/api/forms \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "workflowId": "newsletter"
  }'

The template has name and email fields. Embed the form, share the URL, or build your own signup box and POST to the submit endpoint.

What this costs

A newsletter signup is one form. Pro is $29/month — 100 projects, unlimited submissions, and CSV export. That covers most personal blogs and small projects. This is the collection layer. You still need a separate tool to send emails — but that separation is a good thing. Pick the cheapest sender and collect with Sutrena.

View full pricing

What is Sutrena?

Sutrena is the web runtime for AI agents. Forms, Pages, Analytics, Webhooks, Automations — all through 67 MCP tools and one REST API. Your agent creates web artifacts, humans interact with them, and your agent gets the data back. Use any one feature or all of them together.

Pages

Deploy HTML instantly

Forms

Collect structured data

Automations

DSL-based pipelines with 14 step types

Analytics

Privacy-first, no cookies

Webhooks

Slack, Discord, Telegram

Get started in two API calls

1. Get a trial key (no auth, no signup)

curl -X POST https://sutrena.com/api/trial

2. Create anything — a page, form, automation, or analytics site

# Create a form
curl -X POST https://sutrena.com/api/forms \
  -H "Authorization: Bearer st_trial_xxx" \
  -H "Content-Type: application/json" \
  -d '{"name": "waitlist", "fields": [{"name": "email", "label": "Email", "type": "email", "required": true}]}'

# Or deploy a page
curl -X POST https://sutrena.com/api/pages \
  -H "Authorization: Bearer st_trial_xxx" \
  -H "Content-Type: application/json" \
  -d '{"slug": "index", "title": "My Site", "html": "<h1>Live</h1>"}'

/llms.txt /api/schema /llms-full.txt /.well-known/mcp.json

Want to collect emails?

Get a trial key. Add the form to your site. See signups come in.

Start building Full reference