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Letter Template System - Automated Document Generation & Mail API

Overview

The Letter Template System is a powerful visual editor and API-driven solution for creating, managing, and sending personalized physical mail at scale. Design professional letter templates with your branding, embed dynamic variables, and generate thousands of customized letters through a simple REST API integration. Welcome to modern Mail Merge

Key Features

Visual Template Editor

Create professional letter templates with an intuitive split-screen interface. Real-time preview shows exactly how your letters will look when printed and mailed. No coding required for template design.

Dynamic Variable System

Insert variables anywhere in your templates using simple {{variable_name}} syntax. Personalize each letter with recipient-specific data including names, addresses, amounts, dates, and custom fields. Variables are automatically populated when you submit orders through the API.

Logo & Branding Integration

Upload and embed your company logo directly into templates. Logos are stored as base64-encoded images within the template, ensuring consistent branding across all mailings. Build a reusable logo library for multi-brand organizations.

QR Code Generation

Embed QR codes in your letters for enhanced customer engagement. Two modes supported:

RESTful API Integration

Send letters programmatically through a simple multipart form data API. Submit recipient addresses, sender information, template GUID, and variable data in a single API call. Supports all major USPS mail classes including First Class, Certified, and Priority Mail.

Template Management

Use Cases

Debt Collection & Legal Notices

Send personalized payment reminders, collection notices, and legal correspondence with proper formatting and tracking. Embed account balances, payment due dates, and case numbers as variables.

Healthcare & Medical Billing

Automate patient statements, appointment reminders, and explanation of benefits letters. Include personalized amounts due, service dates, and provider information.

Financial Services

Generate account statements, loan notifications, tax documents, and compliance mailings. Maintain regulatory compliance with consistent formatting and audit trails.

Government & Municipal Services

Send tax notices, permit approvals, violation notices, and public notifications. Scale from single letters to mass mailings with the same template.

E-Commerce & Retail

Create personalized thank you letters, promotional offers, and customer appreciation mailings. Drive online engagement with QR codes linking to exclusive offers.

Non-Profit & Fundraising

Send donation acknowledgments, event invitations, and impact reports with personalized donor information and contribution amounts.

Technical Capabilities

Supported Mail Services

Template Specifications

API Features

Data Security

Integration Workflow

  1. Design Template: Use the visual editor to create your letter layout with logos, text blocks, and QR codes
  2. Add Variables: Insert dynamic placeholders like {{first_name}}, {{balance_due}}, {{due_date}}
  3. Save Template: Template is stored with a unique GUID for API reference
  4. API Integration: Copy the auto-generated curl command and integrate into your application
  5. Submit Orders: Send API requests with recipient data and variable values
  6. Automated Fulfillment: Letters are printed, inserted into envelopes, and mailed via USPS

Benefits

Time Savings

Eliminate manual letter creation and mailing processes. What once took hours now takes seconds. Scale from 1 letter to 10,000 letters with the same effort.

Cost Efficiency

No need for in-house printing equipment, envelope stuffing, or postage management. Pay only for letters you send with transparent per-piece pricing.

Personalization at Scale

Send uniquely customized letters to every recipient while maintaining brand consistency. Increase engagement rates with personalized content.

Developer-Friendly API

Simple REST API integration works with any programming language. Comprehensive documentation, working examples, and curl commands included.

Brand Consistency

Centralized template management ensures every letter matches your brand guidelines. No more inconsistent formatting or outdated logos.

Compliance & Tracking

Built-in audit trails for regulatory compliance. Track every letter from creation to delivery with detailed status updates.

SEO Keywords

Letter template system, automated mail API, personalized letter printing, REST API mail service, USPS API integration, bulk mail automation, template-based document generation, variable data printing, QR code mail integration, programmatic mail sending, direct mail API, letter personalization software, automated document fulfillment, mail merge API, physical mail automation

Getting Started

Create your first template in minutes. The visual editor guides you through every step with helpful hints and real-time preview. Once your template is saved, copy the API integration example and start sending personalized letters immediately.

No special software required. No printing equipment needed. No postage management headaches. Just design, integrate, and send.

Ready to automate your physical mail? Start creating templates today and transform how your organization communicates through postal mail.

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