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Documentation Index

Fetch the complete documentation index at: https://developer.sendoso.com/llms.txt

Use this file to discover all available pages before exploring further.

Sendoso API allows you to integrate Sendoso’s direct mail and gifting capabilities into your own application or platform. With our API, you can automate the sending of physical gifts and direct mail to your customers, leads, and employees. You can use the API to:
  • Programmatically trigger sends (e.g., re-activate stale leads in your pipeline)
  • Embed sending functionality directly into custom forms
  • Mass marketing outreach based on criteria you select
To get started, you will first need to sign up for a Sendoso account and obtain your API key. Once you have your API key, you can begin making API calls to access and manipulate data within your Sendoso account. Our API is organized around REST principles and is designed to have predictable, resource-oriented URLs and to use HTTP response codes to indicate API errors. We support both GET and POST requests, and all data is sent and received in JSON format. If you have any questions or need further assistance, please contact our support team at developers@sendoso.com.