Overview

This guide provides step-by-step instructions on using PostGrid’s pre-built Modules for Make.com. The integration allows you to automate mailing workflows, including sending Letters, Postcards, Self-Mailers, and running Address Verification directly within a Make scenario

Requirments

PostGrid API credentials (Test and Live API Keys).
Make.com account
Access to your data source, such as Google Sheets, Hubspot, Salesforce, etc.

Adding PostGrid to Make Scenario

Search for PostGrid and select it.

Choose one of the available actions

Connecting to PostGrid

For any action, the first step is to connect your PostGrid account by creating a connection with your API Key. You can use either your Test or Live API Key.

You can learn more about where you can find your API keys in PostGrid here

It's recommended to start with your Test API Key. Once you confirm your scenario works as expected, switch to your Live API Key.

Actions

Send Letter

To send a letter through PostGrid, you need to provide both sender and recipient information, along with details about the mailing itself.

Sender and Recipient requirements

For letters, both Sender and Recipient Information are required.

You have options to fill in First Name, Last Name, and Company Name. At least one combination is required, either First Name & Last Name or Company Name.

Next, you need to complete the address information, which includes Address Line 1, Address Line 2, City, State, Postal Code, and Country Code .

Please note that the Country Code must be provided in the two-character ISO31661 Alpha-2 format

Mailing requirements

In addition to sender and recipient details, you must also define the specifics of your mailing.

Description field is used internally to help you identify the letter later.

Template Source determines how your letter is generated. You can choose any of the following options:

HTML: You can enter the letter template HTML code in the Template Value.
PDF URL: You can put the publicly accessible PDF URL in the Template Value
PostGrid Template ID: You can put the Template ID of a template you've created in your PostGrid account. You can learn more about PostGrid Template Editor here.

Also, please note that your template should follow PostGrid Design Guidelines for print readiness, which you can find here.

You will also need to choose the Address Placement, which controls whether the recipient’s address is printed on the first page of your letter or on a separate cover page automatically added to the document.

PostGrid also allows you to configure printing preferences. You can select whether the letter is printed single-sided or double-sided, in color or black and white, or Perforate First Page

For delivery, you must choose one of the available Mailing Classes. You can learn more about different mailing classes here.

If you have already set up a Return Envelope with PostGrid, you can include it in your letter by adding the Return Envelope ID. You can learn more about Return Envelope here.

Finally, PostGrid supports personalization by letting you add Merge Variables to your template. You can map the variables you have defined in your template to actual data fields in your scenario. Up to ten key-value pairs can be configured for this purpose, enabling highly tailored content for each recipient.

Send Postcard

To send a postcard through PostGrid, you need to provide both sender and recipient information, along with details about the mailing itself.

Sender and Recipient requirements

For postcards, the Recipient details are required while the Sender details remain optional.

You have options to fill in First Name, Last Name, and Company Name. At least one combination is required, either First Name & Last Name or Company Name.

Next, you need to complete the address information, which includes Address Line 1, Address Line 2, City, State, Postal Code, and Country Code .

Please note that the Country Code must be provided in the two-character ISO31661 Alpha-2 format

Mailing requirements

In addition to sender and recipient details, you must also define the specifics of your mailing.

Description field is used internally to help you identify the letter later.

Template Source determines how your letter is generated. You can choose any of the following options:

HTML: You can enter the letter template HTML code in the Template Value.
PDF URL: You can put the publicly accessible PDF URL in the Template Value
PostGrid Template ID: You can put the Template ID of a template you've created in your PostGrid account. When using a Template ID, postcards require both a Front Template ID in the Template Value and a Back Template ID in the Template Value Two. You can learn more about PostGrid Template Editor here.

Also, please note that your template should follow PostGrid Design Guidelines for print readiness, which you can find here.

You can then select the Size of your postcard and choose from the available Mailing Classes provided by PostGrid. You can learn more about different mailing classes here.

Send Self-mailer

To send a self-mailer through PostGrid, you need to provide both sender and recipient information, along with details about the mailing itself.

Sender and Recipient requirements

For self-mailers, both Sender and Recipient Information are required.

You have options to fill in First Name, Last Name, and Company Name. At least one combination is required, either First Name & Last Name or Company Name.

Next, you need to complete the address information, which includes Address Line 1, Address Line 2, City, State, Postal Code, and Country Code .

Please note that the Country Code must be provided in the two-character ISO31661 Alpha-2 format

Mailing requirements

In addition to sender and recipient details, you must also define the specifics of your mailing.

Description field is used internally to help you identify the letter later.

Template Source determines how your letter is generated. You can choose any of the following options:

HTML: You can enter the letter template HTML code in the Template Value.
PDF URL: You can put the publicly accessible PDF URL in the Template Value
PostGrid Template ID: You can put the Template ID of a template you've created in your PostGrid account. When using a Template ID, self-mailers require both an Inside Template ID in the Template Value and an Outside Template ID in the Template Value Two. You can learn more about PostGrid Template Editor here.

Also, please note that your template should follow PostGrid Design Guidelines for print readiness, which you can find here.

You can then select the Size of your self-mailer and choose from the available Mailing Classes provided by PostGrid. You can learn more about different mailing classes here .

Verify US and Canada Addresses

PostGrid allows you to verify addresses in the United States and Canada directly within your Make scenario. This ensures your data is standardized, complete, and mailable before you proceed with sending mail or storing the address.

When verifying US or Canadian addresses, you should provide the following fields:

Address Line 1
Address Line 2 (optional, for apartment/suite/unit information)
City
State/Province
Postal Code
Country (must be either US or CA)

The more complete your input, the more accurate the validation and standardization results will be.

PostGrid standardizes and validates the address. If corrections or formatting changes are needed, PostGrid will return the corrected version. You can then map this verified address back into your workflow, for example, updating a CRM record or ensuring a mailing scenario only uses deliverable addresses.

You can learn more about Address Verification Details here.

Verify International Addresses

PostGrid also supports verification of international addresses, allowing you to validate addresses from over 240 countries and territories. This is particularly useful when running global mail campaigns or working with international customers.

When verifying International addresses, you should provide the following fields:

Line 1
City
Postal Code
Country Code (two-character ISO31661 Alpha-2 code)

You can learn more about Address Verification Details here