apicheats.dev Cheat sheet Raw .md
POST

Try POST /contact-properties — Resend API

Resend playground

Create a new contact property

Credentials

Kept in this tab only. Requests go through apicheats.dev's same-origin proxy straight to api.resend.com; the proxy stores and logs nothing about them.

Headers

Body application/json

3 body fields
  • key · required · string — The property key. Max length is 50 characters. Only alphanumeric characters and underscores are allowed.
  • type · required · string — The property type.
  • fallback_value · optional · string — The default value to use when the property is not set for a contact. Must match the type specified in the type field.