What is thanks.io?
What it is
thanks.io is a direct-mail automation platform. You use it to design, send, and track physical mail - postcards, letters, Notecards, gift cards, and MagnaCards - through a web dashboard, a REST API, or an integration with your existing tools.
Mail is personalized with handwritten-style text rendered by a proprietary digital handwriting engine. Every piece is printed, addressed, and mailed on your behalf. You never touch an envelope.
Trusted by 5,000+ businesses since 2017, thanks.io is built around a simple idea: physical mail cuts through digital noise in a way that email and ads cannot.
When to use it
- You want to stand out in a prospect's inbox - but their physical mailbox.
- You need to send thank-you notes, win-back offers, or neighborhood outreach at scale.
- You want automated drip campaigns triggered by CRM events, birthdays, or website visits.
- You're building a product workflow (e.g., post-purchase touches) and need a programmable mail API.
thanks.io works for solo operators sending a handful of cards and enterprises sending millions of pieces per year.
The five mailer types at a glance
| Type | Size / Format | Best known for |
|---|---|---|
| Postcard | 4×6, 6×9, or 6×11 | High-volume outreach, promotions, neighborhood farming |
| Letter | Windowed or Windowless | Formal communications, long-form content, nonprofits |
| Notecard | 5.5x8.5 folded | Premium personal touches, VIP clients, thank-yous |
| Gift Card | Branded, real stamp | Customer appreciation, win-back offers, gifting |
| MagnaCard | 6×9 magnetic | Maximum staying power - sticks to fridges and metal surfaces |
All five types support First Class or Standard postage, chosen per send, and international delivery. Standard postage needs a paid plan.
Key capabilities
Creatives. Save each design as a creative - a front design paired with a handwritten-style message - and send it again with a click, from a campaign, or through the API and integrations. Build a creative yourself or have ThanksAI design one from a short description. See Creatives.
AI-powered personalization. AI Fonts with optional Realism Mode produce handwritten-style text that looks personally written. Check my message scores your message before you send and suggests a stronger version. Per-recipient AI messaging customizes copy at the individual level.
QR tracking. Embed a dynamic QR code with a per-recipient URL. Get notified by email, text, or webhook when someone scans, and work each scan as a lead on the Lead Board. View scan analytics by template and mailing list.
AI Receptionist. Print a local phone number on your mail with %YOUR_AI_PHONE%, and an AI receptionist answers every call, day or night. It asks the caller your questions, tells them you'll call right back, and texts and emails you the lead. Callers also appear on the Lead Board. See AI Receptionist.
Campaigns. Automate sends based on triggers: Days After Added (drip), Birthday, Holiday, Neighbor Blast (radius around an address), and evenFLOW (paced daily sending). Set it once; it runs on its own.
API and integrations. A full REST API lets developers trigger sends programmatically. Native integrations include HubSpot, Canva, HighLevel, and more. Generic automation via Zapier, Make, and 8,000+ connected apps.
Analytics and audit. Track QR scans in the Global Scan List. Review every API call, dashboard action, and webhook event in the audit log.
Why physical mail works
Inboxes are saturated. Open rates for email continue to fall. A physical postcard lands in someone's hands - it cannot be filtered by an algorithm, and it does not disappear on a swipe.
The handwritten-style format amplifies that effect. A piece that looks personally addressed is far more likely to be read than a printed advertisement.
Even a single well-timed Notecard to a high-value client can outperform an entire email sequence. The medium signals effort.