Email Personalization Field Checker — illustrative example

INPUT
Template: Hello {{first_name}}. Sample record has no first_name. Approved fallback greeting supplied for this illustration: Hello there.

RESULT
Missing field: first_name.
Fallback used: Hello there.
Rendered greeting: Hello there.
QA status: missing data handled using the supplied fallback; no placeholder remains visible. Other fields and the full message still need their own checks.

REVIEW
Test templates with incomplete records as well as ideal ones. A fallback should read naturally without exposing raw merge-field syntax.

This is a teaching example, not a live execution record.