How to Connect Stannp to Excel (4 Methods Compared)

The Problem With Getting Workbook Data In and Out of Stannp

You have an Excel workbook full of data — recipient names, mailing addresses split across columns, campaign flags, template IDs. You need that data pushed into Stannp to run a physical mail campaign, or you need delivery results written back into the workbook for reporting and reconciliation.

Stannp handles direct mail at the API level — postcards, letters, address validation, cost estimates before you commit. But moving data between Excel and Stannp involves a sequence of steps that few people have a clean answer to. The standard flow starts with an export to CSV, a reformat to match Stannp's field names, a manual upload, and a confirmation check before you can even begin the campaign.

Four approaches follow. The first three have real ceilings.

Method 1: Manual CSV Export and Upload

The Excel path leans harder on exports than Google Sheets does. You format the data, save as CSV, log into Stannp, import, wait for the validation pass, fix any rejected rows, re-export, try again. Then you launch the campaign.

On the return leg, Stannp's delivery export drops into a separate file. You open it alongside the workbook, match IDs or names by eye, and paste the status data back into the columns where it belongs.

Do that for one Q4 campaign and it is an afternoon. Do it monthly across multiple client accounts and it is a grinding, error-prone ritual that occupies hours that were supposed to go toward actual analysis.

Method 2: Power Automate

Power Automate has Stannp connection options. You can build a flow that triggers on an Excel table change or a scheduled run, calls the Stannp API, and writes the result back.

A quick question before you go further: are you comfortable with HTTP actions in Power Automate? Do you know how to parse a JSON response and map a specific key to a specific Excel cell? If those things feel like a wall, this is not the fastest path — skip to Method 3 or 4.

If you are still reading: the flow works once it is built. But building it means handling Stannp's auth, constructing the HTTP body with your address fields mapped to the right parameter names, and deciding whether to use the single-send or batch endpoint. The batch endpoint is the one you want for a full workbook run. It is also the one that requires more careful setup.

You probably just need your 400-row mailing list sent to Stannp in one shot. You probably have no idea how to build a Power Automate HTTP action with dynamic JSON body construction. So you either simplify the scope or you hand the task to whoever on your team understands flows and wait. That wait is usually measured in days, not hours.

Method 3: The Previous Generation — Connector Add-Ons

Until recently, the best option for repeatable Excel-to-Stannp workflows was a category of add-ins that let you define column mappings, save the configuration, and reuse it against a fixed sheet range. You tagged your address fields, saved the template ID, and ran it.

That was legitimately useful. Repeatable, consistent output, no manual reformatting on every run.

But the configuration was static. Change the worksheet structure and your saved config points at the wrong columns. Add a filter condition — only send to rows where the opt-in flag is checked — and you are wiring that logic yourself. The add-in got the data across; the thinking was still entirely on you. And any schema drift broke things silently until someone noticed the wrong addresses going out.

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 your data, and through its built-in Stannp integration it can send mailpieces, validate addresses, pull delivery reports, and write results back — from a single prompt in the sidebar.

Example 1: Bulk-send letters from the workbook

Send a Stannp letter to every row in my Excel Mailing List sheet using template 38204 — names in columns A and B, address in columns C through F — and paste the mailpiece IDs and statuses into columns G and H.

Every recipient gets a physical letter. The IDs and statuses land in the workbook as each send completes.

Example 2: Write the campaign cost estimate into the budget sheet

Create a Stannp campaign using the group ID in cell B1 and template ID in cell B2, then fetch the estimated cost and write the per-unit price and total into cells B3 and B4.

The pattern: instead of running the estimate in Stannp's UI and copying numbers into Excel by hand, you ask for the setup and the cost pull in a single instruction.

Try It

Get the 7-day free trial of SheetXAI and open any Excel workbook with mailing addresses or Stannp campaign data, then ask it to do one of the tasks above. The Stannp integration is included in every SheetXAI plan.