Own the Whole Stack. Own the Whole Bill.
Dev houses and agencies hit this need constantly. You build a product for a single client, an HR portal or a contract flow, and signing is one feature inside the larger build.
Outsourcing that piece to a legacy provider is expensive and slow. Reselling Firma.dev instead lets you own that line item and the margin on it.
How the reseller model works
The flow is straightforward. You sign up, get a workspace, and place each client's project in its own isolated workspace silo. You track usage per workspace and handle the client's billing yourself. You own the relationship and the markup from end to end.
Buy envelopes at the wholesale rate of €0.049 (about 5 cents USD).
White-label the experience, then isolate the project in its own workspace.
Set your markup, bill the client, and keep the spread.
The economics
Your Margin, Your Price
The Math in Practice
Here is an illustrative example with round numbers.
Charge €0.49 per envelope, still roughly 10x under most legacy options, and a 10,000-envelope project bills the client €4,900.
Your envelope cost is €490. That nets you €4,410 on the project, around a 90% margin, all yours.
Built for Client Projects, Not Platforms
Full white-label
Your brand sits in front of the client, not Firma.dev's. A custom logo overrides the default on the signing UI, on certificates of completion, and on notification emails, so the client never sees us. Embedded template and signing editors, plus a framework-agnostic embed, mean integration in hours rather than weeks against a documented API. The complete white-label guide covers the full setup.
The cheapest e-signature API.
Many times under incumbents on a per-envelope basis.
Full white-label across signing UI, certificates, and emails.
embedded signing and template editors
A fast, well-documented API with embedded signing and template editors, so teams integrate in hours rather than weeks.
Per-customer workspaces, audit trails, and certificates of completion on every envelope.
Why resell Firma.dev
The cheapest e-signature API, many times under incumbents on a per-envelope basis.
Full white-label across signing UI, certificates, and emails.
Integrates in hours, not weeks, against a documented API.
No contracts and no monthly minimums, pay-as-you-go.
Support from the engineers who build the product.
Share a code. Earn for two years.