Independent consultants · Boutique agencies

Send one link.
Close the deal.

Plumbline sends an executive-grade proposal, holds an in-line signature, and locks in a Stripe-secured commencement deposit. Proposal, signature, and deposit — all in a single click.

Captured
3-in-1

Proposal · Signature · Deposit

Money
Escrow

Milestone-released, via Stripe Connect

Price
$19

Flat · Solo tier

Plumbline markPlumbline
Proposal · 0024

Prepared for

Northwind Operations Co.

Engagement

Operating-model review

Timeline

8 weeks

Investment

$24,000

Deposit

$6,000

Scope

  • Discovery interviews + ops audit
  • Operating-model redesign
  • Implementation playbook

Sign + deposit

Confirm $6,000 commencement deposit to lock the engagement.

Sign →

Why Plumbline

One link. Three capabilities. Zero back-and-forth.

Plumbline combines proposal generation, a shareable link, and escrow deposit capture into a single click — so the deal closes in the moment the client reviews the document, not three days later.

Features

What you actually get.

Three capabilities, one workflow — wired together so a signed proposal carries the deposit with it.

Proposal generation
A four-prompt wizard renders an executive-grade PDF in under a minute — scope, timeline, investment, deposit, all on one page.
Shareable link
The client opens the same link on any device. The proposal IS the contract, signed in-line — no DocuSign, no second vendor.
Escrow deposit
Stripe Connect captures the commencement deposit at signature. Funds sit in escrow, then release milestone by milestone.

Trusted by independent firms

Trusted by 200+ indie firms
Acme StudioNorthwind OpsHelio LabsLatch & KeyUnboxed Co.
ASNOHLLK

Get started

Ready to send the first proposal in one link?

Sign up, run the four-prompt wizard, send a proposal — and lock the deposit at the first signature.

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