How to Connect PostGrid to Excel (4 Methods Compared)

The Problem with Sending Physical Mail From an Excel Workbook

You have an Excel workbook full of recipients. Names, addresses, payment amounts, campaign details. You need physical mail to go out, postcards, checks, letters, welcome kits. PostGrid handles the printing and delivery. But bridging an Excel workbook and PostGrid's API is the part nobody enjoys.

PostGrid is API-first. That is why it scales. It is also why most Excel users are stuck either hand-entering recipients in the PostGrid dashboard or waiting for a developer to write a script. For teams that own the data but not the code, neither option is fast.

Below are the four common ways people get Excel data into PostGrid. Only the last one handles the full range of use cases without involving an engineer.

Method 1: Copy Recipient Data by Hand Into a PostGrid Campaign

The default for non-technical teams. Open the PostGrid dashboard, create a campaign, type or paste recipient details, configure the template, launch. For a small one-off run, this is workable.

When this works:

• Fewer than twenty recipients
• A genuinely one-time campaign you will not run again
• Simple address data with no custom merge fields

When it breaks:

• Workbooks with more than a few dozen rows
• Campaigns with merge variables pulled from multiple columns
• Monthly or quarterly recurring runs with the same template and fresh data
• Anything where a typo in a transposed address sends mail to the wrong door

Manual entry does not scale and does not stay accurate. The workbook is the source of truth, but every keystroke in the PostGrid dashboard is a chance to drift from it.

Method 2: Use Power Automate to Trigger PostGrid From Row Changes

The next step up is Power Automate, which integrates naturally with Excel files stored on OneDrive or SharePoint. You build a flow that fires when a new row appears and calls PostGrid's API.

This works for event-driven moments:

• New customer added to the workbook → send a welcome postcard
• New approved vendor row → send a check
• New survey respondent → send a follow-up letter

This fails for batch or conditional work:

• Sending to rows that already exist in the workbook, not just new ones
• Filtering to rows where a column equals "Approved" before sending
• Merging five columns into an HTML template per row
• Writing returned PostGrid IDs back to specific cells

Power Automate fires row by row on new events. It does not scan existing data, it does not apply conditional logic across a full column, and it does not write API responses back to the row that triggered them in a clean way. Batch logic is not what it is built for.

Method 3: The Previous Generation — VBA Macros and Custom Scripts

Until recently, the best option for bulk PostGrid sends from Excel was a VBA macro or an external Python script: loop through rows, call PostGrid's REST API, handle the responses, write them back. That was a real step up from manual data entry.

But you were still responsible for writing and maintaining the macro, mapping columns to API fields, handling pagination and rate limits, and updating the code every time the workbook structure changed. The script did the sending, but the engineering was still on you. And VBA macros and PostGrid REST calls sitting in the same file is a maintenance headache nobody signs up for willingly.

This is the category we think of as the previous generation. It worked, but it asked a lot of the operator.

The Easy Way: Using SheetXAI in Excel

There is a different way entirely. SheetXAI is an AI agent that lives inside your Excel workbook, both on Excel for the web and Excel desktop. It reads the workbook, understands what you are looking at, and through its built-in PostGrid integration it can send the mail orders, log the responses, and handle the conditional logic for you. No macros, no scripts, no API credentials to manage in a formula.

Example 1: Your Data Is Already in the Workbook

You have a workbook open with 150 new-account-holder rows: first name and last name in columns A and B, address in columns C through G. A welcome kit box order template is ready in PostGrid.

For each row in the 'New Accounts' tab, create a PostGrid box order using the name from columns A and B and the address from columns C through G. Write the returned box ID and status into columns H and I.

SheetXAI reads the workbook, calls PostGrid once per row, and writes each returned ID and status back into place. One hundred fifty rows done. You did not open the PostGrid dashboard.

Example 2: Your Data Lives Somewhere Else

If the recipient list lives in another system, SheetXAI can pull it first and then fire the mail run in one prompt:

Pull all vendors from Xero where payment status is 'Approved' and due date is this week. Write each vendor's name, address, and payment amount into a new 'Check Run' tab. Then create a PostGrid cheque for each row using bank account ID bank_xyz and write the returned cheque ID into column H.

SheetXAI fetches the vendor data, writes it into Excel, and fires the PostGrid batch. One prompt, end to end, with the workbook as the working layer between the accounting system and the mailer.

Which Method Should You Use

For a small one-off campaign with twenty recipients you already have in front of you, the PostGrid dashboard is fine. For new-row event-driven triggers where a new account row should automatically queue mail, Power Automate is a reasonable fit.

For any batch work, sending to filtered subsets of an existing workbook, merging columns into templates, logging PostGrid responses back to cells, handling conditional send logic, SheetXAI is the only option that does it in one prompt without writing code.

If you are running recurring mail campaigns, or if the workbook has more rows than you want to handle by hand, the time saved on the second run pays back the first.

Try It

Get the 7-day free trial of SheetXAI and open any workbook with recipient data, then ask it to send a PostGrid campaign. The PostGrid integration is included in every plan.

For specific workflows, see how to send bulk postcards from an Excel mailing list, how to run a bulk check run from an AP workbook, or browse the full integrations directory.