Pricing
Free forever, even commercially. The license is how you own the readable source and fund the project. Founding licenses are $149 once; the standard price is $249. The AI runs on your own keys.
You don't run Tinbox to own an inbox for its own sake. You own the deployment so it can do the things a rented inbox can't: render your live orders, draft your replies, run your campaigns — an agent operating the stack on keys you hold. That only works because the whole thing runs on your account. The free build gives you that independence; the license adds the readable core source, direct support, and funds the work that keeps Tinbox moving. You own the deployment either way.
Choose how you own it
Run your entire email stack on your own Cloudflare account, free, for your own mail at any scale. No trial clock, no seat count, no credit card.
Free forever, even commercially. The license is how you own the readable source and fund the project — no subscription, renewal, or seats. Standard price $249.
Founding price: $149. Standard price: $249.
We deploy Tinbox into your Cloudflare account, wire the domain and mail path, prove the first send and receive, then hand it over. An operated three-month bundle is $1,800.
Buy it with a net under you. However you buy, the software runs on your Cloudflare account, so the only recurring cost is your own metered usage — estimate it below ↓. And there's no leap of faith: self-hosting is free forever, so you can run the entire stack before you pay a cent. If the license still isn't a fit, request a full refund within 14 days. How we handle your data and keys is on the security page.
The usage bill
The license is one-time; the only recurring bill is your own Cloudflare usage. Storage and compute sit in the free tier for a small team, and sending is free for the first 3,000 a month, then $0.35 per 1,000. Drag the slider to estimate yours.
AI features run on your own keys — Anthropic, OpenAI, OpenRouter, or Cloudflare Workers AI — so there's no AI markup stacked on top, and you pick the model per task instead of being stuck with a house one.
$0.00/mo
Free tier covers you
Pay only what you use. First 3,000 emails/month sent free, then $0.35 per 1,000. Estimates assume 12-month retention, ~100KB avg message size.
Bring your own keys
Store a provider key encrypted in your deployment, or keep it as a Worker secret.
Pick the model per task
Use a stronger model for chat and a faster, cheaper one for inline writing aids.
No AI markup
Tinbox never resells tokens. You pay the provider directly, on your own account.
Renting Gmail + Resend + Mailchimp runs a small team roughly $150/mo, forever. See the full comparison →
The license
Run it for your own mail at any scale, on your own account: that's the whole idea. Every view, rule, and integration is yours to shape with agents, skills, and plugins, and the readable source comes with a lifetime license.
Because the whole stack runs on your account, the license isn't just a copy of the source — it's permission to teach the inbox your business. A few pieces ship in the box; the rest are yours to shape.
Don't want to build it yourself? That's exactly what Done-for-you is for — we'll build the skills, agents, and integrations your product needs.
You're free to
The only limits: don't resell Tinbox to others as a hosted service, and don't ship it rebranded with our name stripped off — those need a quick word with us (that's the partner & OEM track). Everything else is yours. Read the full license.
Questions
Yes. Running Tinbox for your own organization's mail (any number of inboxes, domains, and teammates) is free on your own Cloudflare account. You pay only your own Cloudflare usage, which for a typical small team rounds to $0/mo.
The readable source code, yours to audit and modify, plus priority updates, early access, and a direct support channel. The free build already includes commercial use for your own organization and every product capability.
Steadily, by design. Each new license funds the next round of work, so the project pays for itself as it grows — no subscription treadmill, and no version we hold back to force a re-buy. Updates ship to every license holder, and you take them on your schedule. The full readable source also lets you maintain and adapt your deployment directly.
Yes, that's the Done-for-you plan. We'll design rich inbox views and components that fit your product, wire skills and agents into your business logic, and automate the workflows you run by hand today: triage, routing, replies, and migrations. Scope and price are bespoke; tell us what you need and we'll put together a plan.
Because the whole point is that you own your stack — it runs independently on your account. A subscription would contradict that. The AI runs on your keys, so there's no recurring inference cost for us to pass on. One payment, yours for life, no vendor in the path of your mail. (Nobody else pairs a lifetime license with agentic AI — bring-your-own-keys is what lets the price be one-time.)
There's a safety net. If the license isn't a fit, request a full refund within 14 days and we'll sort it out — see the refund terms. And you don't have to decide on faith: self-hosting is free forever, so you can run the whole stack on your own account and try it before you ever pay.
Please do, that's exactly what the partner program is for: refer clients and earn a recurring cut, while you handle the build. Operating deployments for clients on their own accounts, or shipping it white-labeled, is the OEM track — just a quick conversation to set up. Running it for your own company's mail is always free.
The first 100 licenses are $149. After that, the standard one-time price is $249. The license never renews.
For agencies & platforms
Two reserved rights, two tracks. We never run a hosted service ourselves — every deployment is the client's own account — so operating or rebranding Tinbox for others is what these tracks license. Running it for your own company's mail is always free.
Propose Tinbox to your clients and earn a recurring share of every license you bring in. You do the build; we keep it running.
Want to operate Tinbox deployments for your clients, or ship it white-labeled? Those rights are reserved — license them from us.
Start free on your own Cloudflare account today; buy the lifetime license when you're ready to own the source. A coding agent can do the whole setup for you.