Trusted by 1000+ Customers
Capabilities That Streamline Postcard Print & Delivery
Utilize powerful features to create, print, mail, and track throughout the U.S., Canada, and worldwide.
01
Native Integrations
Connect with Salesforce, HubSpot, and QuickBooks to send postcards directly.
02
Manage Recipient Data
Add individual contacts or upload CSV files with mandatory address fields.
03
Dynamic Templates
Personalize and design postcards using HTML templates/PDF uploads.
04
Merge Variables
Incorporate variable data printing to personalize postcards.
05
Scalable On-Demand
Send customized postcards, individually or in bulk, to clients to boost brand presence.
06
Automated Scheduling
Trigger postcards based on specific dates, events, or customer milestones.
07
Print Delivery Network
Print and mail globally via georouting and automatic carrier selection.
08
Address Verification
Standardize & validate addresses across 245+ countries and territories.
09
Real-Time Insights
Monitor production, delivery, and campaign performance metrics with live analytics.
10
Compliance & Security
Ensure data privacy with HIPAA and SOC 2 TYPE 2 for regulated mailings.
11
Premium Paper
Enhance the durability and appearance of postcards with high-quality paper.
12
Unique Tracking Elements
Add QR Codes & PURLs to direct mail to record attribution & measure ROI.
Top Benefits of Printing and Mailing Postcards With PostGrid
Automate personalized physical communications within HubSpot, Salesforce, Zapier, or other platforms.
Set automated triggers in your CRM or marketing automation platforms based on customer actions without manual intervention.
Boost brand presence by reaching high-value prospects at home with pinpoint geographic and demographic targeting.
Use dynamic data to customize every postcard with unique names, offers, and imagery for maximum engagement.
Launch campaigns in minutes. Leverage our 2-day SLA to execute physical communications on an industry-leading timeline.
Save time and money with transparent pricing that eliminates manual mailing overhead and multiple vendor dependencies.
Eliminate manual errors and Undeliverable as Addressed (UAA) mail using in-built address verification and standardized formatting.
5 Steps to Use PostGrid’s Postcard API
Scale your physical mail outreach with developer-friendly automation and detailed API documentation.
- Sign Up
Register on PostGrid and retrieve your test and live API keys from the settings tab to begin integration. - Design Your Mail
Use templates, design with HTML, or upload your own PDF to create postcards. - Create Contact List
Provide mandatory address details for your contacts. Sync individual contacts or upload a CSV. - Launch Your Campaign
Select your mail class and delivery speed to finalize orders. Every postcard is assigned a unique Order ID. - Track & Analyze
Monitor delivery in real-time through the dashboard. Configure webhooks to receive automated status updates for every mailing.
Postcard API Use Cases
Top capabilities that empower businesses to automate postcards for customer retention and acquisition.
Re-engage customers with compelling postcards. Physical mail has a much higher visibility than a promo email, and a card with a unique discount code is an effective way to win back users.
For high-ticket items, an automated postcard can be triggered after a cart is abandoned. Include a dynamic QR code that takes the customer back to their checkout page to boost sales.
Automate key moments by setting triggers for customer birthdays, brand anniversaries, or reaching a loyalty tier. A physical card feels like a genuine gift and helps strengthen brand loyalty.
Businesses can automate reminders for scheduled appointments or annual check-ups. Sending a postcard 7–10 days in advance provides a physical prompt to help reduce no-show rates.
Trigger a “Welcome” postcard the moment a user signs up for a service or completes a first purchase. Including a personalized note helps humanize brands and establishes a strong connection.
Target high-value B2B prospects by triggering postcards when they interact with specific website content. Sending a personalized, high-quality mailer to a decision-maker's office enhances brand awareness.
Case Studies
PostGrid Print and Mail API provides robust automation for regulated, compliance-driven businesses across healthcare, fintech, martech, and beyond.
Read the Case Study
Total Life
A mission-driven therapy platform for seniors, Total Life integrated PostGrid to expedite customer acquisition and streamline essential outreach.
By utilizing Variable Data Printing (VDP) and automated workflows, they successfully personalized high volumes of mail with individual names and details.
The partnership resulted in a 15% increase in readership and a 30% improvement in response rates, all the while ensuring hassle-free access to critical mental health counseling services.
Read the Case Study
MessageDeck
As a premier software provider focused on optimizing customer connections, MessageDesk adopted PostGrid’s API to ease offline outreach.
By leveraging high-speed bulk uploads and automated address verification, the team transformed their manual mailing process into a few-click workflow.
This integration allowed them to successfully send and manage custom postcards at scale, streamlining customer engagement while maintaining operational ease.
Enterprise-Grade Compliance and Data Security
HIPAA
PIPEDA
GDPR
SOC 2 TYPE 2
PCI-DSS
Data Encryption
Audit Logs
Role-Based Access Control
Secure Hosting on AWS
Single Sign-On
Third-Party Penetration Testing
Continuous Monitoring
Integrates with Your Favorite Tech Stack & Tools
Easily Improve your workflow and automate print & mail through seamless integration capabilities.
Frequently Asked Questions
What Is a Postcard API?
The PostGrid Postcard API empowers businesses to design, print, and mail postcards directly from their existing software. Mailings can be automated by setting triggers such as a new sign-up, a customer's birthday, or an abandoned cart. This replaces manual processes with a scalable, digital workflow to boost engagement and brand recall.
Can Marketing Campaigns Be Automated With This API?
Yes. Once integrated, the API can trigger mailings based on user actions in a CRM. This removes the manual work of exporting lists and coordinating with printers, allowing for the delivery of hyper-personalized mailers at scale.
Is Sending Postcards Through an API Secure?
Yes. The Postcard API is built with enterprise-grade security, including SOC 2 TYPE 2, HIPAA, and GDPR compliance. Customer data is encrypted, while the in-built address verification feature helps minimize errors and return mail.
Is There a Minimum Order Requirement?
No, there is no minimum volume required. The API is built for maximum flexibility, which allows businesses to send a single piece or a million pieces of mail at once. For those with monthly mailings up to 500, the Starter Plan is the ideal entry point; for larger requirements, the Enterprise Plan offers unlimited volume to support growth.
What Can Be Accomplished with a Postcard API?
Businesses can design high-impact postcards using various printing, color, and background options to ensure brand consistency. By utilizing merge variables, every piece can be personalized to increase engagement and ROI.
What Postcard Sizes are Supported?
The API supports all standard industry sizes, including 4×6, 6×9, and 11×6. This variety allows businesses to choose the most cost-effective size for standard notifications or larger formats for high-impact marketing and promotional campaigns.
Is It Possible to Track the Performance of Postcard Campaigns?
Yes. Beyond delivery tracking, unique QR codes and Personalized URLs (PURLs) can be integrated into the design via the API. This enables businesses to track digital conversions directly back to specific physical mailers, providing clear data on campaign attribution and ROI.
How are Addresses Verified Before Mailing?
The API includes built-in address verification that standardizes and validates recipient data against official postal databases (like USPS for the U.S. and SERP for Canada). This ensures that every postcard is deliverable before it is printed, significantly reducing waste and improving campaign efficiency.
How Fast are the Postcards Delivered?
PostGrid offers a 2-day SLA, meaning postcards are printed and posted within two business days. The final arrival time depends on the selected mail class (such as First-Class or Standard) and local postal standards. Faster mail classes can be selected during setup to accelerate delivery.
Can the Postcard API Be Used for Bulk Campaigns?
Absolutely. The API supports sending a single “Thank You” card or triggering batch processing for millions of recipients simultaneously. The system is built to scale, making it ideal for seasonal promotions, newsletters, or large-scale re-engagement campaigns without manual intervention.
Can You Send Postcards Internationally via the Print and Mail API?
Yes. The API supports global direct mail, allowing businesses to send postcards to over 245 countries and territories. By leveraging a distributed network of print partners worldwide, mail is routed to the facility closest to the recipient. This approach ensures faster delivery times, eliminates the complexities of international customs, and significantly reduces cross-border postage costs.
Are Tracking Records Provided for Every Mail?
Yes. Real-time visibility is provided for every piece of mail. Through the dashboard or webhooks, status can be tracked from “Printing” to “Processed” and “Completed.” Per-piece tracking IDs and delivery logs are available to measure the exact ROI of every campaign.
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