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Stampwing
Early access is on the way

Email for your
websites and apps

Give your app’s everyday emails a home.
Send transactional email, automate your flows, and follow every message across your projects.

Stampwing atlasIllustrative preview

atlas

Sample · Last 24 hours
Accepted
13.4k
Queued
330
Bounce rate
0.18%
Queue latency
339 ms
Example project Domain verified
API requestsProject-scoped API keys
Email queueAWS us-east-1
Worker 01us-east-1
Worker 02us-east-1
Worker 03us-east-1
Worker 04us-east-1
Send latency p50 · 180 ms
Explore a sample project. Sample data · No emails sent

Your projects, organized.

Give each app its own project, with domains, API keys, and message history together.

Build the whole flow.

Create email templates and choose when your app sends them.

Know what happened.

See which messages are queued, accepted by the receiving server, or need attention.

THE EVERYDAY ESSENTIALS

Made for your app’s email.

The small messages behind a great product.

  • Account verification
  • Password resets
  • Receipts
  • Product notifications
A FEW THINGS TO KNOW

Common questions.

What is Stampwing?

Stampwing helps developers send and manage their apps’ email. Create templates, automate workflows, and track each message in one workspace.

What am I signing up for?

Early-access and launch updates from Stampwing. Joining is free and doesn’t create an account or subscription.

When can I try it?

We haven’t announced a launch date yet. Join the waitlist and we’ll let you know when you can try Stampwing.

How does testing work?

Stampwing’s Test environment uses simulated delivery, so you can check your integration without contacting real recipients. The free resource library also includes a local API fixture you can use today. Your account is approved automatically. Verify your sending domain and connect your app to send live email.

Is this for marketing campaigns?

Stampwing is for transactional email: account verification, password resets, receipts, and product notifications. It doesn’t support bulk marketing campaigns.

USEFUL BEFORE YOU EVEN SIGN UP

Transactional email guides and templates.

Practical answers for the email behind your app.

Explore the resources
DELIVERABILITY

Delivered, but not in the inbox?

Trace a missing message and find the next useful step.

Read the guide
YOUR NEXT APP

One email setup. Several projects.

A repeatable checklist for domains, keys, and environments.

Get the checklist
FREE TO MAKE YOUR OWN

Good emails. A head start included.

Four everyday templates, in HTML and plain text.

Browse templates
Try the request flow locally

Download and run the local API fixture with Node.js 22+. This example is simulated and sends no email.

Local API example · simulated deliveryshell
curl http://127.0.0.1:3027/api/v1/emails \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: receipt-42" \
  -d '{"to":"reader@example.test","subject":"Your receipt","text":"A simulated receipt"}'
A clearer home for your app’s email

Better email days ahead.

Join the waitlist. We’ll let you know when you can get started.

Join the waitlist