Email API

I have been reviewing the documentation for the ServiceM8 API regarding sending emails (https://developer.servicem8.com/reference/send_email). However, I could not find details on additional fields that can be included in the payload to ensure that the sent message appears in the graphical interface of specific jobs within ServiceM8.

From my understanding, the example URL provided only accepts the fields shown in the documentation. However, I assume there may be another endpoint that supports additional parameters. Could you kindly share the correct API endpoint and a list of fields that can be included in the payload?

Specifically, I am looking for fields that:

Specify the sender's contact information .
Allow the use of an email template.
Include a UUID or other reference field to link the email to the job journal.
I appreciate your assistance and look forward to your response.