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Online proposal software for agencies and professional services firms to create, send and track client proposals
By Nusii

Nusii is online proposal software built for creative agencies, freelancers and other professional services businesses. The company's starting point is a dislike of the usual tools: proposals assembled by hand in Word, InDesign, Pages or a PDF are slow to produce and awkward to keep consistent. Nusii's team says it has more than thirty years of combined experience of creating, sending, tracking and managing proposals, and built the product around that. Its site says that a proposal can go out in around fifteen minutes, where other methods can take days.
Ready-made templates take a logo and brand colors in a few minutes, and proposals can be sent from the user's own email address and custom domain so that the client does not see that an online service is involved. A flexible text editor keeps the focus on the content rather than the layout.
Sections and whole templates can be saved and dropped into a new proposal, including the sender's pricing structure. Variables fill in the client's details automatically, which removes the chore of finding and replacing an earlier client's name. Optional items can be included so that a client can choose extras, which the company presents as a way to add upsell work.
The sender is told when the client opens the email containing the proposal link, when the proposal itself is viewed, and when it is signed or declined. If a client downloads a PDF copy, that is recorded too. Internal reminder intervals prompt a follow-up on unopened proposals. Signatures are legally binding and are collected in the browser.
The interface is available in 35 languages, with multi-currency and tax handling set at the account or client level. Proposals can be filtered by whether they are sent, unopened or opened, to show what is working. Nusii connects to other business tools through integrations and also offers a direct API, and it reports that thousands of companies use it.
Nusii is online proposal software aimed at creative agencies and professional services firms. It replaces proposals built by hand in Word, InDesign or PDF files with branded templates that can be filled in quickly and sent from the browser.
The tool tells the sender when a client opens the proposal email and when the proposal itself is viewed, so follow-up can be timed sensibly.
Agencies and professional services businesses that send many proposals to prospective clients.
Summary written by TrustList from the business's own published information, Nov 2026.
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