An asterisk * in the title indicates the field is mandatory.
If a field has a default value, it is shown in the Description column.
If the field type is an array, the Field Name has a .[n] suffix, where n is the array index placeholder.
Object and array field names are listed to provide context. If a field belongs to an object or an array, the full field name is shown in dot separated notation.

Title															Description																				Details
From *																																			Field Name: From Type: String
Message ID																																			Field Name: msgid Type: ["String", "Null"]
To *																																			Field Name: To Type: String
Date																																			Field Name: Date Type: String
payload																																			Field Name: payload Type: ["String", "Null"]
Subject *																																			Field Name: Subject Type: String

Model: device/smtp/Message