Handwritten mail,
printed at scale.
Inkli.app — Generate Handwritten Letters for Print
The platform that generates print-ready handwritten letters — for you or your mailing house. You print and post; we make the artwork.
Inkli generates letters with genuine ink texture, natural imperfections, and per-character variation — as close as possible to pen on paper.
Free account · 500 letters every month · no credit card required.
How It Works
Four steps to handwritten mail
Step 1
Write your message
Compose your letter — or use a template to get started.
Step 2
Choose your defects & ink
Pick handwriting imperfections and ink colour for authentic results.
Step 3
Upload your recipients
Import a CSV or connect your CRM to personalise every letter.
Step 4
Generate campaign
Print-ready PDFs for mailing houses, or print in-house — your choice.
Want extra control? Use our advanced settings — from handwriting defects to creating your own ink presets to suit your needs. Manually or using AI Ink Studio. Learn more
Output
Two ways to print
You choose — no extra cost.
Print Ready
Generate print-ready PDFs formatted for your mailing house — hand them off directly, no extra formatting needed.
Print In-House
Download your campaign and print on your own printer. Full control, same authentic handwriting.
Inkli by Penned
Bringing Penned's handwriting technology to the printed world
Inkli brings the most advanced handwritten text generation to your direct mail campaigns — at scale. Every letter is unique, personalised, and as close as possible to pen on paper. Upload your recipients, choose your ink, and generate thousands of individually handwritten letters ready for print and fulfilment.
Why Handwritten
Trust is built by hand
We bring the power of handwritten mail to the printed world with our printed handwriting technology. Authentic, personal, and available on-demand — so every letter earns attention, builds recognition, and drives action.
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Open rate
Handwritten envelopes are almost always opened — compared to 42% for standard print.
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Response rate
Recipients are seven times more likely to respond to a handwritten letter than a typed one.
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ROI
Direct mail campaigns with handwritten letters consistently outperform digital channels on return.
Technology
Pen physics mimicking across your letters
Individual Glyph Definition
Every character is uniquely generated — no two letters are ever the same.
Pen Physics Mimicking
Ink density, pressure variation, and bleed simulated per stroke for authentic results.
Handwriting Defects
Tremor, drift, and spacing irregularity make every word look genuinely human.
Built to complement your business, not hinder it
Start free with 500 letters a month — no credit card required. Scale up when you're ready; paid plans are tailored to your volume.
| Plan | Letters / month | Storage | API rate | Team seats | Webhooks |
|---|---|---|---|---|---|
| FreeForever free | 500 | 1 GB | — | 1 | — |
| Starter | 1,500 | 5 GB | — | 3 | Yes |
| Pro | 5,000 | 50 GB | 60 / min | 10 | Yes |
| Business | 10,000 | 100 GB | 120 / min | 25 | Yes |
| Enterprise | Unlimited | Unlimited | 300 / min | Unlimited | Yes |
Paid plans available on request — starting from £44.99 / $49.99 per month. Sign up free, then request a tailored quote from your dashboard.
Generate handwritten mail today.
Sign up for a free Inkli account and get 500 letters every month — no credit card, no waitlist. Upgrade only when you need more volume.
Free forever for 500 letters/month. Cancel any time. No catch.
Get in touch
Questions, partnerships, or just want to say hello — we'd love to hear from you.