Customize Message Method (form, react code)

[Timebox: 2 hours, Complexity Points: 2]

As a user, I need to interact with a form/method so that I can customize my message (greeting, body, & closing) before sending.

**User Expectations:**

- To be able to enter a customized message

**Developer Dependencies:**

- Customize Message Method (form wireframe)
- Required Fields:
- Recipient email
- Greeting (dear loved one)
- Body (Love you much!)
- Closing (love, your kid)

Start by locating the React form or method described by the issue; no file or test is named, so inspect the form wireframe dependency and surrounding frontend entry points first. Done means users can enter a recipient email, greeting, body, and closing in a customizable message before sending.

Written by the indexing model from the issue text.