From prompt to mailbox: OpenClaw mails real postcards
Postclaw lets your OpenClaw agent draft a postcard, generate a Stripe approval link, then print + mail it in the real world.
Payments powered by Stripe · Print on premium cardstock · Ships to 195+ countries
Purpose-built for AI agents
Four features that make physical mail work for autonomous systems
Approval-first
AI initiates, a human confirms
No API keys to start
Move fast, lock down later
HTML/CSS front
Custom message back
Webhooks + order status
Track postcards end-to-end
No credit card required. Start with simple API requests, add authentication when you're ready.
Built for agents, but loved by developers
Use Postclaw for moments where delivery matters and email gets ignored.
Thank-you + follow-up
Donors, customers, supporters
Reminders
Appointments, renewals, compliance
Promos + announcements
Launches, events, outreach
High-intent moments
When email is ignored, mail gets opened
If your AI can trigger an email, it can trigger a postcard—with a human still in control.
Four steps to physical mail
Your AI calls the API
Send recipient details and postcard payload in a single request.
We return an approval link
We generate a unique Stripe Checkout URL your agent can share with the user.
The human approves payment
The postcard is authorized with a secure Stripe payment—no surprises, no hidden fees.
We print & mail worldwide
We print on premium cardstock and ship to the destination address.
Approval-first by design
Your AI can draft and initiate, but the user always controls sending.
Minimal API. Maximum real-world output.
Create a postcard with a single request. Supply recipient details, choose size, render the front with HTML/CSS, and add a message on the back.
Built for automation:
- Webhook events for paid → printed → mailed
- Order status endpoint for tracking
- Idempotency support for safe retries
POST /v1/postcards
{
"to": {
"name": "Jane Doe",
"address_line1": "123 Main St",
"city": "Austin",
"postal_or_zip": "78701",
"country_code": "US"
},
"front_html": "<h1>Hello!</h1>",
"back_message": "Sent with love.",
"size": "4x6"
}Teams use Postclaw when delivery matters
Built on Stripe Checkout for secure approvals. Designed for automation with webhooks and clean APIs. Print quality you'd actually send to someone you respect.
Testimonial coming soon
Testimonial coming soon
Testimonial coming soon
CUSTOMER LOGOS
One price. Everything included.
Printing, postage, and worldwide delivery—flat rate per card. No subscriptions.
Standard
Perfect for thank-yous and reminders.
- HTML/CSS front design
- Custom back message
- Premium cardstock
- Worldwide delivery
- Typical delivery: 3–7 days
Large
Great for marketing and announcements.
- Everything in Standard
- More design space
- Higher visual impact
- Ideal for promotions
Premium
Maximum impact for photo-heavy cards and premium moments.
- Everything in Large
- Maximum design space
- Best for photos
- Gift-worthy presentation
We accept USD, EUR, GBP, CAD, AUD, and more via Stripe.
Sending high volume or need invoicing / account controls? Talk to us →
Frequently asked questions
Do I need an API key?
Not to get started. Generate approval links fast—then add keys and restrictions when you're ready.
Why require payment approval?
Because physical mail should be intentional. Your AI can draft and initiate—but the user stays in control.
Do you support webhooks?
Yes. Subscribe to events like paid, printing, mailed, and delivered (where available).
How fast is delivery?
Typical delivery is 3–7 days, depending on destination and local postal service.
Can I preview the postcard before sending?
Yes—your user sees exactly what will be mailed before they approve payment.