How to Connect PostGrid to Google Sheets (4 Methods Compared)

The Problem with Sending Physical Mail From a Spreadsheet

You have a Google Sheet full of recipients. Names, addresses, maybe account numbers, amounts, or custom offer details. You need physical mail to go out, postcards for a real estate campaign, checks for vendor payroll, notice letters for a legal deadline, welcome kits for new customers.

PostGrid handles the printing, postage, and delivery. But getting your spreadsheet data into PostGrid as a batch of mail orders is more work than it sounds. PostGrid is an API-first platform. That is its strength and its friction point. If you are not a developer, you are staring at API documentation with a spreadsheet full of recipients and no obvious path between them.

Below are the four ways people typically get Google Sheets 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 approach for non-technical teams. You open the PostGrid dashboard, you create a campaign, you type or paste recipient details one by one, you configure the template, and you launch.

When this works:

• Fewer than fifteen recipients
• One-time campaign you will not repeat
• Simple flat address data with no merge fields

When it breaks:

• Anything over a few dozen recipients
• Campaigns that need merge variables pulled from multiple columns
• Recurring mail runs that use the same template with fresh data each time
• Anything where the sheet changes week to week

The core catch is manual data entry does not scale and does not stay accurate. If your sheet has 400 tenants and one address gets transposed, a real piece of mail goes to the wrong door. Paste errors compound fast when you are re-entering structured data by hand.

Method 2: Use Zapier or Make to Trigger PostGrid From Row Changes

The next step up is automation. You wire Zapier or Make to watch your sheet, and when a new row appears, the automation calls PostGrid's API to create a mail order.

This works for event-driven moments:

• New customer row added → send a welcome postcard
• New approved vendor row added → send a check
• New patient row added → send a survey packet

This fails for batch and analytical work:

• Sending to every row that exists right now, not just new ones
• Filtering to rows where a column says "Approved" before firing
• Merging data from multiple columns into a custom HTML template
• Logging returned IDs back to specific cells in the sheet

Zapier and Make fire one event per new row. They do not know how to look at your existing sheet, decide which rows qualify, pull five columns into a template, and write the API response back to the right row. That requires real conditional logic, and event-driven tools do not do conditional logic well.

Method 3: The Previous Generation — API Scripts and Mail-Merge Macros

Until recently, the best option for bulk PostGrid sends from a spreadsheet was a custom script: a Google Apps Script macro that looped through rows, called PostGrid's REST API, and wrote the responses back. That was a real step up from manual entry.

But you were still responsible for writing and maintaining the script, mapping every column, handling API errors and rate limits, updating the script every time the sheet structure changed, and debugging it when it broke. The script got the data out, but the engineering was still on you. For teams without a developer in the room, it stayed out of reach.

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 Google Sheets

There is a different way entirely. SheetXAI is an AI agent that lives inside your Google Sheet. It reads the sheet, 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 scripts to write, no Zapier flows to configure, no API documentation to read.

Example 1: Your Data Is Already in the Sheet

You have a sheet open with 400 tenant rows, name in column A, address in columns B through F, and new rent amount in column G. A letter template is already set up in PostGrid.

For every row in the 'Tenants' sheet, create a PostGrid letter using template ID tmpl_notice01, merge the name from column A and the new rent from column G, and write the returned letter ID into column H.

SheetXAI reads the sheet, calls PostGrid once per row with the right merge data, and writes each returned letter ID back to column H. Four hundred rows, four hundred letters queued, column H filled. You did not touch the PostGrid dashboard.

Example 2: Your Data Lives Somewhere Else

If your recipient list lives in a CRM or another tool, SheetXAI can pull it first and then fire the mail run in the same prompt:

Pull all contacts from HubSpot where the lifecycle stage is 'Customer' and the last purchase date is more than 90 days ago. Write them into a new 'Re-engagement' sheet with name, address, and account ID. Then create a PostGrid postcard for each row using template ID tmpl_promo22, and write the returned postcard ID into column D.

SheetXAI fetches the contacts, writes them into the sheet, and fires the PostGrid batch. One prompt, end to end, with the sheet as the working layer between the CRM and the mailer.

Which Method Should You Use

For a single one-time campaign with fifteen recipients you already have in front of you, entering them by hand in the PostGrid dashboard is fine. For new-row event-driven triggers, Zapier or Make are a reasonable fit.

For any batch work, sending to a filtered subset of an existing sheet, merging multiple columns into a template, logging returned IDs back to the sheet, handling conditional send logic, SheetXAI is the only option that does it in one prompt without a developer.

If you are running recurring mail campaigns, or if the sheet has more rows than you want to touch 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 sheet 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 personalized postcards from a sheet, how to run a bulk check run from an AP sheet, or browse the full integrations directory.