How to Connect Nusii Proposals to Excel (4 Methods Compared)

The Problem With Getting Sheet Data In and Out of Nusii Proposals

You have an Excel workbook full of data — prospect contacts, project scopes, line-item pricing, accepted proposal totals. You need it pushed into Nusii, or pulled back out, in a way that doesn't consume an afternoon every time.

Nusii is good at creating polished, client-ready proposals with structured sections and line-item pricing. But moving data between it and your Excel workbook is more work than it should be. The usual flow is: export a CSV from the workbook, open Nusii, create each client and proposal by hand — one row at a time, per prospect, per project.

Below are the four common ways teams handle this. Only the last one scales.

Method 1: CSV Export and Manual Entry

The default for Excel users. Export the prospect worksheet as a CSV, open the file in a text editor or import it somewhere readable, switch to Nusii, and re-enter the records one by one. If you're lucky, you copy from the CSV. If you're not, you're retyping.

At 5 prospects, that's manageable. At 15 warm leads before a pitch deadline, you're spending your Friday afternoon being a human data-entry bridge between two applications. The proposal software was supposed to make client work faster, not give you a second job as a copy-paste operator.

Method 2: Power Automate

Power Automate has Nusii connector support. You can build a flow that triggers on a new row in an Excel table, calls the Nusii API, creates the client or proposal, and writes the returned ID back to the workbook.

Before you go further — do you know what a REST connector is? A flow trigger? Field mapping? If those terms feel like someone else's territory, this is a good moment to skip down to Method 4. You'll get there faster.

Still here? The automation works. The problem is what's between you and "working." You need to set up the Excel table correctly so Power Automate can read it, map every column to the right Nusii API field, handle edge cases like a project name with special characters, and debug whatever breaks when one row returns an error and the rest silently pass.

A row-by-row flow is not the same as a bulk operation.

Creating 15 clients from a workbook means 15 separate flow runs, 15 API calls, and a run history that becomes hard to audit when one fails at row 9 and you need to figure out why.

You probably just need the client records in Nusii and the returned IDs back in column E. You probably have no idea how to trace a Power Automate run error — and there's nothing wrong with that. So you hand it off to whoever on your team handles automation, and now you're waiting on their calendar. If the pitch deadline is Tuesday, that timeline may not work.

Once you add conditional logic — only create a proposal if the worksheet column says "priority" — or try to aggregate totals across multiple sheets, you've outgrown what Power Automate handles cleanly.

Method 3: The Previous Generation — Connector Add-Ons

Until recently, the best option for repeatable workbook-to-Nusii workflows was a category of add-ons that let you configure column mappings and saved templates. You picked your range, matched your columns to Nusii fields, saved a config, and ran it on demand.

That was a genuine step up from CSV exports. The config was reusable, output was predictable, and you didn't have to redo the column matching every run.

But the thinking was still yours. You designed the template, decided which rows to include, set the field order, named the sections. The tool moved the data — the operator still did all the reasoning. And when the workbook structure changed — a renamed column, a new worksheet — the config broke until someone updated it.

This is the previous generation. It worked, but only within the limits you set for it.

The Easy Way: Using SheetXAI in Excel

There is a different way entirely. SheetXAI is an AI agent that lives inside your Excel workbook. It reads the workbook, understands what you are looking at, and through its built-in Nusii Proposals integration it can push to or pull from Nusii for you. No template configuration, no automation glue, no summarizing your data by hand. You just ask.

Example 1: Bulk-create clients and draft proposals from a prospect list

Read my Excel prospect list (Name, Email, Service Type) and bulk-create one Nusii client and one draft proposal per row, writing created client ID and proposal ID back into the workbook

Each row becomes a client record and a draft proposal. The IDs land in the workbook as the operation runs, so you can track exactly which rows succeeded.

Example 2: Pull all accepted proposals and total the line items by service category

For each accepted proposal ID in column A, fetch line items from Nusii and write each item name, unit price, quantity, and line total as rows — group by proposal with a sub-total per proposal

The pattern: instead of pulling the data first and then doing the math, you ask for both in one prompt. SheetXAI handles the grouping and subtotaling inline.

Try It

Get the 7-day free trial of SheetXAI and open any Excel workbook with prospect data or proposal IDs, then ask it to do one of the tasks above. The Nusii Proposals integration is included in every SheetXAI plan.