The proposal software serious businesses use to win more work

Don't spend all day playing with proposal design. Send good-looking proposals fast and close faster.

Try free for 14 days
No-hassle cancellation 60-day money-back guarantee 4.5 stars on G2

6985 companies are winning more business with Nusii

Logos of companies winning more business with Nusii

Built to keep you winning

This is what winning looks like.

Agencies and professional services that send more proposals win more work. We know, because we serve hundreds of B2B customers each sending dozens of proposals a day.

Other proposal software tools keep you stuck twiddling design options. With Nusii, you'll get an effective proposal in front of your prospect in 15 minutes, not 3 days.

Plus, with our smart tracking and notifications, you'll know exactly when they're looking at your proposal — so you can reach out to close the deal.

45.1%
Proposals accepted

Across 5,596 proposals sent in Q1 2026.

Nusii 45.1%
Industry average 21%

That's 2.1× the industry average acceptance rate.

“It's perfect that we can see if and when the receiver reads our proposal, selects pricing options, and accepts or declines the proposal.”

Tim Raemakers Tim Raemakers, Business Solutions Specialist at Profound

Get effective proposals out the door

Try free for 14 days
  • Tim Raemakers
  • Rebecca Shaddix
  • Pia Tischer
  • Skot Waldron
  • Brian Sooy
  • Sean Atkinson
  • Christian Asche
  • Julian Crasci

Joined by 6,985 companies closing more deals

“Sending proposals through Nusii saved us an average of 2 hours per proposal, and increased closed/won deal conversion rate by 41%.”

Rebecca Shaddix
Rebecca Shaddix
Managing Partner, Strategica Partners

Everything you'd expect from your online proposal software

(plus more the other guys don't have)

E-signatures

Legally binding signatures right in the browser

Multi-signature support

Localized in 35 languages

Sell to clients anywhere

Multi-currency and tax handling at the account or client level

Fast & flexible creation

Save individual reusable sections and full templates

Allow clients to select optional items

Look pro in less time

Use variables to auto-fill client details

Send proposals from your actual email address and/or custom domain

Analytics

Filter proposals by sent, unopened, opened, and more

Use data to improve every proposal you send

Just enough branding

Flexible text editor centers your great ideas

Add brand colors and logo, and be done

Plus…

Smart notifications

Smart notifications keep you connected during the decision-making

Email opens
Know the second your prospect opens the proposal email. (We're crossing our fingers for you!)
Proposal opens
Get notified the instant your prospect views the proposal.
Acceptance & signature
Hurray! The moment your client signs, we'll let you know. Good news should always travel fast.
(PDFs are still a thing)
Sometimes a prospect downloads a PDF copy to show a partner or just read offline. You'll know when they do.
Outreach reminders
Set internal reminder intervals for each proposal. Even when things get busy, you'll follow up on time.

Sales workflow

Easily integrate Nusii with your sales workflow

Tie your proposals into your sales processes, where they belong. Nusii offers built-in integrations for popular workflow, chat, and CRM tools. Plus, do whatever you want with your proposal data with our API and AI assistant integrations like Claude, ChatGPT, Gemini, and Microsoft Copilot.

“We use Nusii via API, command line and AI agents to go through a process from call transcripts, emails, standards, rate card and much more to build a proposal.”

Michael Sale Michael Sale, Something Pressing
  • Zapier
  • HubSpot
  • Pipedrive
  • OnePageCRM
  • Stripe
  • Slack
  • Intercom
  • Basecamp
See all integrations

Built for the whole team

Every team member is comfy using Nusii

When you're writing proposals, the goal is to get them out the door — not to make sure everyone on your team knows how to use a complicated tool.

Nusii has no learning curve and no training required. If your usual "proposal person" is out for the day, anyone can log in and make sure your deals keep closing.

“Nusii for us is the effective, easy to use option, that has little training overhead.”

Andrew Kris Andrew Kris, Founding Partner at Borderless Executive Search

Psst… Agencies pay less on Nusii

Most proposal tools lock the best stuff behind their highest-priced tier. We don't.

Get CRM integrations, custom proposal domain, and 3 user seats for just $49/mo. (Not $49 per user per month. Big difference.)

Try the Agency plan free for 14 days Why choose Nusii for your agency? →

Cancel anytime · 60-day refund guarantee

Customer story

Coveto increased their conversion rate to over 50% managing proposals with Nusii

“With Nusii, we have a lot more data and we can analyze it and see which proposals converted and which didn't convert. And because it's so easy to change the template, we can quickly create new versions, iterate on proposals, and try to find a better version.”

Christian Asche
Christian Asche
Co-founder & CEO, Coveto
Coveto team

Proposals with a personal touch

Find the right balance of speed + personalization

Lots of agencies are racing to generate proposals faster with AI. But faster isn't better when you're mass-blasting generic proposals that don't close sales.

Nusii is built for agencies that want the “personal pitch” at scale. Create reusable sections, remove irrelevant ones, and tweak the parts you need to. Use dynamic variables to ensure your client's name and business are correct throughout. And get notified the instant your proposals are opened and looked at.

A note from our founder

Actually personal support when you need it

Another reason pros love Nusii: we're a calm, profitable small business that's responsive to our customers' needs. We've been around for more than 14 years, and we're not going anywhere.

We regularly jump on Zoom with our customers to hear how we can serve you better. This often looks like:

  • Helping new Nusii users set up your account and proposal templates
  • Creating useful new features like optional pricing sections/items
  • Adding CRM and workflow integrations
Michael Koper, Founder of Nusii
Michael Koper, founder of Nusii

Hi, I'm Michael. I'm the founder of Nusii, and I work with customers directly, in a refreshingly helpful way you probably haven't experienced since dial-up.

Customer story

“I hired a salesperson who wasn't very technical and she was able to use Nusii in only a few minutes without a problem.”

“What separated Nusii [from Proposable and Proposify] was usability and ease of use. I could imagine onboarding salespeople and having them learn the system the same day, not spending hours trying to figure it out.”

Gina Nieves, CEO & Founder of MarkNet Group
Gina Nieves
CEO & Founder, MarkNet Group

Send winning proposals before your prospects go cold

Want to win more work? Be the agency whose proposal is already in the prospect's inbox while your competitors are still adjusting font sizes.

Try free for 14 days

No-hassle cancellation · 60-day money-back guarantee