Sales · Proposals and e-signature

LetSign

Agent-first proposal and contract tool: your AI assistant drafts it, clients sign and pay through Stripe

Australian-foundedBest fit: SME · Mid-market
Visit LetSign

Pricing · Alternatives · All tools

At a glance

LetSign lets your AI assistant, such as Claude or ChatGPT, turn a sales call into a proposal and contract that matches your brand. Clients review, choose options, sign and pay in one place, with payments going to your own Stripe account.

Category
Proposals and e-signature
Best fit
SME · Mid-market
Pricing
See pricing below
In Adam’s stack
No

Who LetSign is best for

Founders, consultants and small sales teams who already use Claude, ChatGPT or another MCP-compatible assistant and want to go from call to signed, paid deal without rebuilding decks and contracts by hand.

Key features

  • Drafts proposals and contracts from call transcripts
  • MCP server with one-click install for Claude and Codex
  • Pricing tables clients choose from inside the contract
  • E-signatures with email verification and an audit trail
  • Payments and subscriptions through your Stripe account
  • Open, view and signature tracking

Why it’s worth it

It removes the slowest part of closing: rewriting the proposal after every call. Your agent drafts it from the transcript, updates terms as the deal changes, and tracks opens and signatures so you know when to follow up.

Things to consider

  • Built for AI agents, so you get the most from it if you already work in Claude, ChatGPT or another MCP-compatible assistant.
  • Payments run through Stripe, so Stripe processing fees apply on top of the plan.
  • Not designed for documents that need a witness or notary, such as deeds or wills.

For Australian businesses

LetSign is run by Lean Data Pty Ltd, an Australian-registered company.

LetSign pricing

Pricing as published by LetSign

Free plan (with a 0.1% LetSign fee and a LetSign badge). Starter $9 a seat a month (0.1% fee). Team $19 a seat a month (no LetSign fee). Signers never pay or need an account.

Source: letsign.ai. Checked 15 October 2026. Prices change often, so confirm on the vendor’s site before you buy.

Alternatives to LetSign

Other tools listed under Proposals and e-signature. Tools from Adam’s stack are marked.

  • Qwilr

    In Adam’s stack

    Interactive web-page proposals with sign-off

    SMEMid-market

  • PandaDoc

    Proposals, quotes and e-signature with CRM sync

    SMEMid-market

  • Docusign

    The best-known e-signature platform

    SMEMid-marketEnterprise

  • Proposify

    Proposal templates and approval workflows

    SMEMid-market

  • Better Proposals

    Fast, design-led proposals for small teams

    SME

  • Dropbox Sign

    Straightforward e-signature from Dropbox

    SMEMid-market

  • Adobe Acrobat Sign

    E-signature inside Adobe and Microsoft workflows

    Mid-marketEnterprise

  • Oneflow

    Contracts as live, editable documents

    SMEMid-market

  • GetAccept

    Sales rooms with proposals, video and e-signature

    SMEMid-market

FAQ

LetSign: common questions

What is LetSign used for?

LetSign is used to create proposals and contracts with an AI assistant, then have clients sign and pay online through your Stripe account.

Does LetSign work with Claude?

Yes. LetSign has an MCP server with one-click install for Claude, and also works with ChatGPT, Claude Code, Codex and Cursor.

Is LetSign free?

There is a free plan with a 0.1% LetSign fee on payments and a LetSign badge on proposals. Paid plans start at $9 a seat a month.

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