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Lettr

Interact with Lettr transactional email APIs

Audience Contact → Create

AI-generated

Summary

Create a contact in Lettr using an email address, with optional list membership, custom properties, and double opt-in confirmation settings.

Inputs

  • Email (required) — Contact email address.
  • List ID — Optional list to add the contact to.
  • Properties — Optional custom property name/value pairs; each name must match a property defined for the team.
  • Double Opt-In — Optional confirmation email settings. When set, the contact is created as unverified and receives a confirmation email. Settings can include sender email and name, redirect URL, subject, and template slug.

Output shape

A single contact record.

The operation-scoped source pack shows only function signatures, so the returned record shape and exact handling of optional fields cannot be confirmed.

Examples

Example 1: Add a contact to a list with custom data

Provide the contact email, a List ID, and one or more custom property name/value pairs.

Example 2: Require email confirmation

Provide the contact email and double opt-in settings to send a confirmation email and create the contact as unverified.

Links

Discussion