Email (email)

{
    "fields": {
        "name": { "…": "as before" },
        "age": { "…": "as before" },
        "married": { "…": "as before" },
        "email": {
            "cms": {
                "column": true
            },
            "optional": false,
            "type": "email"
        }
    }
}

Since the email address is required (optional is false), the form initially reports the missing field as an error for an already existing record:

Parameters

Parameter	Meaning
optional	field may be missing (default false)
localizable	value per language

The format of an email address is checked (fastest-validator).