Sending postcards or letters

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Note: The Postcards and Letters APIs have been deprecated. If possible, please use Sepire instead.

Inkit's paper-out service comprises the Inkit Postcards API and the Inkit Letters API. You can connect your third-party tools and services to either API.

Postcards

The Inkit Postcards API endpoint allows you to print and mail postcards easily. The API provides endpoints for creating postcards, retrieving individual postcards, canceling postcards, and retrieving a list of postcards.

Letters

The Inkit Letters API endpoint allows you to print and mail letters easily. The API provides endpoints for creating letters, retrieving individual letters, canceling letters, and retrieving a list of letters.

Documentation articles to read:

• Physical mail quickstart guide
• Postcard & letter product specs
• Authentication
• Postcards
• Postcard templates
• Letters
• Letter templates
• Upload file size
• Dynamic images
• Expected send times