Automate with Print and Mail API

PostGrid Print Mail API

Use our fully-documented REST API to send personalized letters, checks, or postcards on-demand and at scale.

Trusted by 1000+ Customers

PostGrid Works For You

Unified Offline Capabilities

Send one or thousands of pieces on-demand and at scale all from print & mail API.

Address Verification

Ensure deliverability with our USPS-certified address verification API.

Tracking and Analytics

Access analytics on all orders and conversions.

Easy Integrations

Ensure seamless integration to your stack with zero-code integration with Zapier. Detailed docs and dev support if required.

Our Customers Say It Best

“We were in the middle of a super-complicated move and way down on our priority list were sending welcome letters, postcards, etc. Our team needed all of them but just didn't have the time to stay on top of the delivery times as we should. PostGrid made tracking easy through their API. Besides doing an excellent job, PostGrid delivered them the day before our deadline. They made sure everything ran smoothly for us.”
Managing Director Of Operations

“PostGrid integration has given our team the capability to connect with prospect data in real-time, saving us hours of manual effort as we were operating a team of 5 employees to manage the workload. Additionally, the platform provided us with reliable letters sending capability to increase customer return engagements.”
Assistant Chief Information Officer

“We started working with PostGrid 6 months ago and so far we have found that their print & mail technology and services are very reliable. The API platform gave us capabilities related to route mailing, which ensured savings on postage. Also, their print price, standalone, mailing and address verification service are the best that we have found around.”
Chief Operating Officer

“PostGrid has handled all our print material needs exquisitely. They have not only assisted us with letters, cheques and mailers but also helped us with address accuracy for timely delivery. Their team is professional, cordial, and responsive to our requirements and deadlines. Our teams often receive compliments related to the quality of our printing materials. The credit goes to PostGrid's excellence and attention to every detail.”
Fulfillment Team Lead

“This API has turned out to be a great asset. We started off with 4000 mailings for 3 months and never had any downtime. I requested an increase in the sending limits, and it was given to me in 10 minutes! I also have used PostGrid to verify our mailing lists. It’s been great for us, and customer support is very reliable.”
Vice President Of Engineering

Scalable REST API

Test and Live Keys – We isolate the test and live environments so you can easily test your API calls
Fully Documented – Every endpoint is fully documented using OpenAPI so you can access it from your favorite tools and languages
Built to Scale – Our Print and Mail API infrastructure is capable of handling millions of fully-personalized orders every day

Address Verification & Completion

Address Verification – All of your mailings will automatically have their addresses validated/corrected in accordance with Canada Post and USPS standards
Address Parsing – Our freeform address parsing capabilities will allow you to make API calls with unformatted addresses
Address Autocomplete – Integrate our Address Autocomplete API to make sure addresses are correct at the point of entry

Detailed Analytics and Tracking

Detailed Activity Log – View logs of all sending activity – including the status of every existing and past order
Database Search & Export – Search for and download print-ready renderings of all mailings at any time
Granular Metadata – Attach application-specific metadata to any API resource to improve visibility and simplify integration

Zero-Code Integration

Zap-ready – PostGrid’s Zapier integration enables you to connect our sending capabilities with over 1600 apps
Dedicated dev support – For seamless integration and set up
Documentation – Detailed API docs and support available

API Dashboard

Enhanced Visibility – Use our dashboard to track your API usage, manage templates, contacts, and other API resources
Detailed Analytics – View analytics on the status of all of your mailings with complete searchability of all current and historical orders
User Management – Invite other users in your organization to PostGrid and enable them to integrate our print & mail API and make use of the dashboard

PostGrid has you covered from all sides

Regulatory Compliance

Data is handled in accordance to all legal framework and requirements and our partners are HIPAA, PHIPA, PIPEDA, GDPR & SOC-2 certified

Data Security and Secure Hosting

Your data is handled in the most secure and confidential manner and we host on Amazon web services for quick, easy to use and safe hosting

Scalable Solutions

Scale your communication channel with ease with our scalable REST API and integration capabilities

Get Started with PostGrid’s API in Seconds

Easily send mails, manage templates and verify addresses globally using API

cURL

Copy


curl https://api.postgrid.com/print-mail/v1/letters \
-u API_KEY: \
-d to[firstName]="Kevin" \
-d to[lastName]="Villena" \
-d to[addressLine1]="145 Mulberry St, Apt PH D, New York, NY 10013" \
-d to[countryCode]="US" \
-d from[companyName]="PostGrid" \
-d from[addressLine1]="90 Canal St, Suite 400, Boston, MA" \
-d from[countryCode]="US" \
-d color=true \
-d express=true \
-d template="template_4hXPyVphgFPynPyHFTJaKo" \
-d mergeVariables[verification_code]=4242

cURL

Copy


curl https://api.postgrid.com/print-mail/v1/postcards \
-u API_KEY: \
-d to[firstName]="Kevin" \
-d to[lastName]="Villena" \
-d to[addressLine1]="145 Mulberry St, Apt PH D, New York, NY 10013" \
-d to[countryCode]="US" \
-d size="6x4" \
-d frontTemplate="template_6a3k5LqumLD7cpdD9VkQUd" \
-d backTemplate="template_oa8Au5h4DqFr1mRDLaKhJz" \
-d mailingClass="standard_class" \
-d mergeVariables[qr_code_url]="https://postgrid.com?source=postcard"

cURL

Copy


curl https://api.postgrid.com/print-mail/v1/cheques \
-u API_KEY: \
-d to[firstName]="Kevin" \
-d to[lastName]="Villena" \
-d to[addressLine1]="145 Mulberry St, Apt PH D, New York, NY 10013" \
-d to[countryCode]="US" \
-d from[companyName]="PostGrid" \
-d from[addressLine1]="90 Canal St, Suite 400, Boston, MA" \
-d from[countryCode]="US" \
-d bankAccount="bank_k9zDtHjZmBe9ruVC4F8PZN" \
-d amount=4242 \
-d message="Here is the payment for the attached invoice." \
-d letterPDF="https://pg-prod-bucket-1.s3.amazonaws.com/assets/sample-invoice.pdf"

cURL

Copy


# List all letters destined for New York that have left their final USPS facility.
curl https://api.postgrid.com/print-mail/v1/letters?search= "NY out_for_delivery" \
-u API_KEY:
 
# Retrieve a check and its corresponding bank account
curl https://api.postgrid.com/print-mail/v1/cheques/cheque_dUtnqaaFTFyz9Yo56PuEfn?expand[]="bankAccount" \
-u API_KEY:

cURL

Copy


# Automatically parse and correct a freeform US or Canadian address
curl https://api.postgrid.com/v1/addver/verifications \
-u API_KEY: \
-d address="14-20 bay st, floor 11, toronto, on, canada"
 
# Use our international API to verify addresses around the world
curl https://api.postgrid.com/v1/intl_addver/verifications \
-u API_KEY: \
-d address[line1]="33 Nine Elms Lane" \
-d address[city]="London" \
-d address[postalOrZip]="SW11 7US" \
-d address[country]="United Kingdom"

cURL

Copy


# List US & Canada previews for partial address input
curl https://api.postgrid.com/v1/addver/completions?partialStreet=182+Se \
-u API_KEY:
 
# List addresses from around the world, sorted by distance to user IP
curl https://api.postgrid.com/v1/intl_addver/completions?partialStreet=15&countriesFilter=UK \
-u API_KEY:

Read our API Docs

All teams run on PostGrid

Enhance your team's performance with a unified API. Our solution is designed for on demand or scalable needs. Easily improve your workflow with seamless integration and automate your offline process.