For SDR teams and founders testing an ROI story

Build the calculator.
Copy one link.
Let the numbers do the explaining.

LiveProof is a free browser-only beta for configuring a cold-email ROI calculator. Set the starting inputs and model assumptions, then share the generated URL. No account and no server storage.

Build your calculator ↓ Request the founding pilot →
Useful today: configure · calculate · copy · share
Built by Vlad Podolyako, founder of Folderly and Belkins, as a deliberately small public beta. The current tool is the browser experience on this page.
Live tool · configure your model

A useful calculator builder,
without an account.

Move the five controls to set the calculator's starting state. The result updates locally, and the share button encodes those numeric settings after the # in the URL.

Browser-only release: calculation and URL encoding happen on this device. The tool has no sign-in, cloud save, recipient profile, or server-side lead feed.
◈ Cold-email ROI calculator builder

All assumptions are editable. Outputs are illustrations from your model, not promises of performance.

Starting inputs
Your assumptions
Illustrative added pipeline / month
$48,000
Added replies / month
+40
Illustrative annual pipeline
$576,000

Illustration: 8,000 emails × 2.5% reply rate × 20% relative lift × 10% conversion × $12,000 deal value.

Privacy boundary: Before any analytics pageview or custom event leaves the browser, LiveProof removes the URL query and fragment, leaving only the origin and path. Custom event data contains only the liveproof product label; Vercel adds the event name and standard transport metadata. The five calculator values are never included. Avoid placing confidential information in any URL you share.
What works now

Three small things,
fully visible.

01
Configure
Set volume, reply rate, deal value, relative lift, and conversion. Every assumption stays under your control.
02
Calculate
See the implied added replies and pipeline. The formula is shown beneath the output so the model is inspectable.
03
Share
Copy a URL whose fragment recreates the same starting state in another browser. No database lookup is involved.
How a shared link works

The fragment is the file.

◈ STEP 01
Choose assumptions
Use values you can explain. LiveProof provides the arithmetic, not evidence that a lift will happen.
◈ STEP 02
Copy the URL
The builder encodes only the five numeric values in a versioned URL fragment on your device.
◈ STEP 03
Recipient explores
Their browser restores the starting values and recalculates as they move a control. Their changes stay in that browser.
Current release boundary

Free tool first.
Pilot conversations second.

Included in this beta

  • Editable cold-email ROI assumptions
  • Instant in-browser calculation
  • Versioned fragment links
  • Graceful defaults for broken links

Not included

  • Accounts or cloud projects
  • Viewer recognition or activity feeds
  • Server-side collection of calculator values
  • Logo, color, or domain customization
FAQ

The honest answers.

Where are calculator settings stored?

Only in the current browser URL fragment. LiveProof has no database for calculator configurations, and it does not use local storage for them.

What is inside a shared link?

A version number and five numeric settings: email volume, reply rate, deal value, relative lift, and conversion. There are no name, company, address, or contact fields.

Does LiveProof track recipients?

No. This release does not recognize a recipient, report opens, or report slider activity back to a sender. A recipient can use the calculator locally.

What is the founding pilot?

It is a direct conversation about what a future product should include. The request link opens a draft in your email app; nothing is submitted automatically.

Will the page work on mobile?

Yes. The calculator is responsive and uses standard browser features. Clipboard availability varies, so the page also explains how to copy the address-bar URL if needed.

Try the tool free.
Shape the next version directly.

If this browser-only calculator is useful and you want to discuss a more capable future product, request a founding-pilot conversation by email.

Request the founding pilot →
Privacy: this opens your email app. Your address and message are sent only if you choose to send it. LiveProof does not append calculator settings to the draft.