The set of criteria used to determine the user's identity on a third-party channel.
| Name | Type | Description | Notes |
|---|---|---|---|
| type | str | The channel type. | [optional] [default to 'mailgun'] |
| address | str | The user’s email address. | |
| subject | str | May be specified to set the subject for the outgoing email. | [optional] [default to 'New message from {appName}'] |