Independent consultants · Boutique agencies
Send one link.
Close the deal.
Plumbline turns your project brief into a one-page proposal your client can read, sign, and pay a deposit on — all in one click.
- What it is
- Three in one
- How you get paid
- Held, then released
- What it costs
- $19
Proposal, signature, and deposit.
Per agreed milestone.
Flat monthly.
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.
Why Plumbline
One link. Three capabilities. Zero back-and-forth.
Write, send, and get paid in one flow. Your client reviews and signs the proposal — and the deposit arrives with the signature.
Features
What you actually get.
Three steps, one link. Here is what your client sees and what happens behind the scenes.
Client voices
What clients say after the work is signed off.
Real notes from real engagements — published with the consultant's approval.
Get started
Ready to send the first proposal in one link?
Sign up, answer a few questions about your project, and send your first proposal today.
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