# Personalize your Create and Send messages

Create and Send supports personalization using Handlebars.

When using [Create and Send](https://www.airship.com/docs/reference/glossary/#create_and_send), you can personalize values directly in the `create_and_send` array, or you can include in your CSV data additional properties that you want to use to personalize messages — any column name or property that is not prefaced with `ua_`. Use `{{column_name}}` or `{{property_name}}` in the body of the message. All values in CSV uploads, including numbers, are represented as strings and cannot be used with [math helpers](https://www.airship.com/docs/guides/personalization/handlebars/math-helpers/).

If you want to personalize your message using both Attributes and information from a CSV, make sure that the properties in the CSV are unique from your Attributes. If an Attribute has the same name as a property in the CSV, Airship will try to use the value in the CSV. See [Object and Array Notation for Create and Send](https://www.airship.com/docs/guides/personalization/handlebars/basics/#object-and-array-notation-for-create-and-send) for using complex arrays and objects.

## Enabling personalization

When using bulk audiences (`bulk_id`) with personalization, include `"personalization": true` in the `options` object of your request. Personalization is enabled automatically when using the direct `create_and_send` array approach.

**Create and Send request with personalization:**

```http
POST /api/create-and-send HTTP/1.1
Authorization: Basic <master authorization string>
Accept: application/vnd.urbanairship+json; version=3
Content-Type: application/json

{
    "audience": {
        "create_and_send": [
            {
                "ua_msisdn": "15551234567",
                "ua_sender": "12345",
                "ua_opted_in": "2021-04-29T10:34:22",
                "name": "New Customer, Esq.",
                "from_city": "City",
                "from_state": "OR"
            }
        ]
    },
    "device_types": [
        "SMS"
    ],
    "message_type": "commercial",
    "notification": {
        "sms": {
            "template" : {
                "fields" : {
                    "alert": "Hi {{name}}! I hear you're from {{from_city}}, {{from_state}}!",
                }
            }
        }
    }
}
```