About Direct Mail API
Direct Mail API is a communication software from LettrLabs that facilitates direct mail campaigns. It provides address validation, tracking, and reporting so businesses can efficiently manage their mailing processes. This API allows users to automate the creation and distribution of physical mail, ensuring accurate and timely delivery. It integrates with various CRM systems to easily pull customer data and send personalized communications. Key capabilities: address validation automated mailing tracking and reporting API integration customer data management Best for: marketing teams that need to execute targeted direct mail campaigns.
Direct Mail API by LettrLabs is a powerful, flexible solution that brings automation and personalization to the traditionally manual world of direct mail. Positioned as a modern tool for marketers and developers alike, it bridges the gap between digital precision and physical engagement by offering an API-driven platform that enables businesses to trigger personalized mail based on real-time customer behavior. Its core value lies in enabling event-based communications like thank-you notes, win-back offers, loyalty postcards, and more — all sent via postal mail — at speeds and scales previously unreachable without significant operational overhead. LettrLabs’ system is particularly well-suited for both developers and non-technical users. While the platform is built around a RESTful API for deep integration, it also provides a clean user dashboard with Canva-style design tools and a library of pre-built templates. For marketers with little coding experience, no-code automation options via Zapier and Make enable seamless workflows between thousands of popular tools and LettrLabs, meaning users can trigger mail based on actions in Shopify, Klaviyo, CRMs, or marketing automation platforms.
Pros & Cons
- Real Handwritten Mailers: Uses robots with real pens for authentic handwriting.
- Fast Fulfillment: Same-day or next-day printing with no minimum volume.
- Powerful Automation: Triggered mail via Shopify, Klaviyo, Zapier, and REST API.
- Personalization Tools: Merge fields, QR codes, and dynamic content supported.
- Campaign Analytics: Real-time tracking of delivery, scans, and conversions.
- Customization & Branding: 60+ handwriting styles, custom designs, and white-label support.
- Affordable Pricing: Competitive rates with nonprofit discounts available.
- Responsive Support: Highly rated customer service and onboarding assistance.
- No A/B Testing: Lacks built-in split testing for campaign optimization.
- Precision May Feel Robotic: Handwriting is very neat—may not fully mimic human imperfection.
- Limited Gifting Options: Not ideal for campaigns requiring physical gifts or inserts.
Features
Key features
Enables sending physical mail automatically from CRMs, websites, or e-commerce platforms based on real-time customer actions.
Supports a wide range of physical mail, including handwritten flat/bi-fold cards and letters, alongside various printed postcards and inserts, offering diverse personalization.
Automatically verifies and deduplicates mailing lists upon submission, significantly improving deliverability and reducing wasted spend.
Provides real-time visibility into mail delivery status, QR code scans, engagement stats, and match-back conversion reporting for measurable ROI.
Offers unique automated triggers for specific industries, such as sending mail to home service prospects based on local weather events.
Ensures rapid fulfillment with no minimum volume requirements, allowing for quick deployment of campaigns regardless of size.
Additional features
An Application Programming Interface for sending physical mail programmatically.
Enables sending targeted, personalized messages automatically.
Allows for 1:1 messaging at scale using real-time customer data.
Supports sending handwritten flat and bi-fold cards.
Offers various sizes (4x6, 6x9, 6x11) for printed postcards.
Provides options for sending letters with a personal, handwritten touch.
Supports sending trifold brochures.
Allows inclusion of perforated inserts in mailings.
Personalizes mail with variable text, merge fields, and images.
Generates unique QR codes for tracking engagement and conversions.
Includes a Canva-style editor and pre-built, industry-tailored designs.
Verifies addresses at the point of submission.
Removes duplicate contacts from mailing lists.
Formats mail to match postal service standards for deliverability.
Connects with other platforms to initiate mail sends based on specific events.
Integrates for post-purchase or cart abandonment mailings.
Connects for flows based on Browse or inactivity behavior.
Integrates with over 6,000+ apps for broad automation capabilities.
Allows retargeting anonymous site visitors with physical mail.
Provides updates on mail delivery status.
Monitors when QR codes are scanned.
Tracks recipient engagement with mailers.
Reports on whether a customer converted after receiving mail.
Centralized dashboard for managing and tracking campaigns.
Supports various stages of the customer lifecycle (welcome, thank-you, renewal, win-back, invoices).
Sends mail based on customer actions (e.g., cart abandonment, review requests, anniversaries).
Enables segmenting mailing lists by audience traits (e.g., VIP, lapsed clients, ZIP code, demographics).
Allows targeting based on geographic location.
Automates mailings to new movers.
Offers formats tailored for specific industries.
For home service providers, triggered by weather events.
Ensures fast turnaround for mail production.
Supports sending any quantity, from 10 to 10,000+ pieces.
Allows users to request a sample of mailers.
Offers guided tours and technical details.
Aims to reduce churn, lower customer acquisition cost (CAC), and increase lifetime value (LTV).
Handles printing internally for maximum quality control.
Provides detailed reporting with performance breakdowns by segment.
Tracks conversions through personalized URLs or codes.
Allows exporting data for further analysis.
Enables sending certified mail for high-value or compliance-sensitive use cases.
Offers a wide variety of robotic handwriting styles.
Allows for offers, brand colors, and personalized images on the back of mailers.
Enables agencies to manage multiple client accounts with custom branding.
Provides a programmatic way to send physical mail.
Supports various integration methods.
Direct connections with platforms like Shopify and Klaviyo.
Support for tools like Zapier and Make.
Provides overall performance metrics for campaigns.
Tools for managing and segmenting mailing lists.
Helps build targeted lists using demographic filters.
Intuitive tools for creating visually compelling mailers.
Streamlines campaigns with triggered sends.
Industry-specific solutions.
Pricing
Monthly plans
Countries & Languages
Interface languages
Billing currencies
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About Direct Mail API
Direct Mail API is a communication software from LettrLabs that facilitates direct mail campaigns. It provides address validation, tracking, and reporting so businesses can efficiently manage their mailing processes. This API allows users to automate the creation and distribution of physical mail, ensuring accurate and timely delivery. It integrates with various CRM systems to easily pull customer data and send personalized communications. Key capabilities: address validation automated mailing tracking and reporting API integration customer data management Best for: marketing teams that need to execute targeted direct mail campaigns.
Direct Mail API Details
Direct Mail API's In-App Market Place
Does Direct Mail API have an in-app market place?
Yes
How many Mini-Apps in the marketplace?
1
Mini Apps
Not available
Pricing Options
Plans
Monthly plans
Accepted Payment Currencies
USD ($), EUR (€), GBP (£), AUD (A$), CAD (C$), JPY (¥), NZD (NZ$), CHF (CHF), SGD (S$), HKD (HK$), SEK (SEK), KRW (₩), NOK (NOK), MXN (MX$), INR (₹), RUB (₽), BRL (R$), ZAR (R)
Pros & Cons
- Real Handwritten Mailers: Uses robots with real pens for authentic handwriting.
- Fast Fulfillment: Same-day or next-day printing with no minimum volume.
- Powerful Automation: Triggered mail via Shopify, Klaviyo, Zapier, and REST API.
- Personalization Tools: Merge fields, QR codes, and dynamic content supported.
- Campaign Analytics: Real-time tracking of delivery, scans, and conversions.
- Customization & Branding: 60+ handwriting styles, custom designs, and white-label support.
- Affordable Pricing: Competitive rates with nonprofit discounts available.
- Responsive Support: Highly rated customer service and onboarding assistance.
- No A/B Testing: Lacks built-in split testing for campaign optimization.
- Precision May Feel Robotic: Handwriting is very neat—may not fully mimic human imperfection.
- Limited Gifting Options: Not ideal for campaigns requiring physical gifts or inserts.
Direct Mail API's Support Options
Email Address
info@lettrlabs.comContact
(888) 408 6649Direct Mail API's Alternatives
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