Thanks.io lets you describe any campaign in plain English - and Thanks AI Studio instantly generates postcards, handwritten notecards, and letters with postage included. Trigger automated sends from your CRM, or mail one piece at a time. No design skills, no minimums, no contracts.
No credit card · Samples ship free · $10 credit on signup

Who uses Thanks.io?
A clean REST API, MCP server, OpenAPI spec, and webhooks. No mail house complexity - just an API call.
Dashboard, CSV upload, or Zapier. Start sending in minutes - no minimums, no commitments, postage included.
Concierge onboarding, design services, dedicated account manager, and lowest per-piece rates on the market.
Physical mail that gets opened
Every piece is crafted with our proprietary handwriting engine for maximum impact and authenticity.

4x6 and 6x9 formats with QR tracking

Windowed and windowless letters with letterhead

5x4 (folded) notecards and branded gift cards

Postcards, letters, notecards, and gift cards - full visual examples in one PDF.
Open Portfolio (PDF)NEW UPDATE
Describe your direct mail campaign in plain English and instantly generate postcards, letters, messaging, and creative ideas-inside thanks.io.
Platform features
Automation, tracking, personalization, and integrations - all at prices that beat the competition.
Our proprietary engine creates indistinguishable handwritten postcards, letters, and notecards that recipients believe are personally written. Our 'realism' mode even includes authentic crossouts for maximum believability. click here to test our handwriting

Track every interaction with unique QR codes. Get instant notifications when recipients scan codes or redeem gift cards. Our real-time analytics and insights show you exactly when and where your mail is being opened.

Create automated drip campaigns for birthdays, holidays, or customer milestones. Set it once and let it run with fully automated workflows that handle everything from timing to personalization.

Send gift cards from leading brands with flexible payment options. Perfect for customer appreciation and referral programs.

Include recipient house photos, last viewed products, or custom details for incredibly personal outreach. Use ChatGPT prompts like: 'Write a note mentioning their recent red dress purchase and birthday.' Our AI-powered personalization engine handles all the variable integration automatically.

Target neighbors of specific addresses by snapping a photo. Perfect for local marketing and service-based businesses.

Works with your stack
Connect Thanks.io with 8,000+ apps through our robust API, Zapier, Make, Pipedream, and native integrations.
HubSpot, Salesforce, ActiveCampaign, Pipedrive
Shopify, WooCommerce, BigCommerce, Magento
Zapier, Make, Pipedream, Integrately
Our robust REST API with OAuth2 authentication makes it easy to integrate direct mail into any application or workflow.
// Send a handwritten postcard
const response = fetch('https://api.thanks.io/api/v2/send/postcard', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
recipients: [{ name: 'John Doe', address: '123 Main Street, Any Town, NY 12345' }],
message: 'Hi %FIRST_NAME% - Thank you for your business!',
front_image_url: 'https://d2md0c8rpvzmz5.cloudfront.net/inspiration_templates/default10.png',
})
});One price covers printing, handwriting, the mail piece, and US postage. Nothing added at checkout.
4x6, 6x9, and 6x11 sizes with QR tracking.
Windowed or windowless with Real Stamp.
Premium folded notecards & branded gift cards.
Real results from real businesses using Thanks.io to drive more sales.
“Love the user interface of thanks.io. Very easy to navigate. Lots of power and control over my campaign. And the stats are amazing.”
“We absolutely love THANKS.IO. They have made sending out letters, thank you notes, birthday postcards, and much more so easy.”
“Great vendor! People that use this service will see a difference in their response rates. This company calls you back and is part of your team.”
“Thanks.io has been a game changer for our real estate business. We've seen a 30% increase in response rates from our direct mail campaigns.”
“The handwriting quality is incredible - my clients actually think I wrote each note by hand. The ROI on these campaigns is unmatched.”
“Set up in minutes. The Zapier integration means our CRM automatically triggers mail whenever a lead hits a certain stage. Genius.”
“The QR tracking is everything. I can see exactly who opened what and when - something email can never guarantee. Highly recommend.”
“We send birthday cards to our entire customer list every year. The personalization features make every recipient feel genuinely special.”
Physical mail cuts through digital noise. Get samples in your hands and $10 in credits to send your first campaign - no credit card needed.
See how much extra annual revenue direct mail could add to your business.
Most businesses leave 80% of their leads untouched because email open rates are dropping.
Find out exactly how much extra annual revenue you could make by automatically mailing the leads who ignore your emails.