marketing-message-test: E360 Message Preview & Test Send

Render a per-channel preview (or fire a test send) for a Marketing Cloud / Engagement 360 message, headlessly, starting from a single contentKey. Covers all six channels: Email, SMS, WhatsApp, Push, In-App, RCS.

Full endpoint tables, request bodies, response-field rules, and the version-floor matrix live in references/api-contract.md. This file is the operating procedure; consult the reference for exact payloads.

When This Skill Owns the Task

Use marketing-message-test when the user wants to:

• render how an authored message looks for a real recipient (personalized preview)
• render content-only with no recipient (unpersonalized preview)
• send a test message to their own address / phone / individual id

Delegate elsewhere when the user is:

• building Data Cloud segments or calculated insights → data360-segment
• building DMOs, mappings, or identity resolution → data360-harmonize
• activating a segment downstream → data360-activate

Required Context to Gather First