| Name | Type | Description | Notes |
|---|---|---|---|
| to | string[] | ||
| from | string | The id of the sender. | |
| template_id | string | The id of the template. | |
| merge_tags | string[] | A list of the merge tags to replace information gaps in the email. The format of each tag should be ``tagName:tagValue`` | [optional] |
| priority | string | The priority of the message. | [optional] [default to 'non-urgent'] |
| custom_data | string | Extra Data related to the campaign to be re-sent via WebHook. | [optional] |
| registered | bool | option to register the message. Its an exclusive feature for senders that require it. | [optional] [default to false] |
| group | string | The group of the message. | [optional] [default to 'default'] |