| Name | Type | Description | Notes |
|---|---|---|---|
| name | String | filename specified in the Content-Disposition header of the attachment | [optional] |
| content_type | String | value of the Content-Type header of the attachment | [optional] |
| content_id | String | value of the Content-ID header of the attachment. | [optional] |
| content_length | Integer | size of the attachment in bytes | [optional] |