|`token` |`text` |The token of the Relays Account to use |**Mandatory**. Account must first be created |
|`subject` |`text` |The subject of the message to be send |**Mandatory**. Can be any string but must *not* be empty |
|`from` |`email` |The email of the form submitter |**Mandatory**. Must be a valid address by [RFC 5322](https://datatracker.ietf.org/doc/html/rfc5322)|
|`content` |`text` |The content of the message. |**Mandatory**. Must *not* be empty |
|`onSuccess` |`url` |Redirects to this URL on success |Must be a valid URL |
|`onError` |`url` |Redirects to this URL on failure. Passes errors as query.|Must be a valid URL. |
Form Error Handling
-----------------------
The form will always return a success, no matter if the account exists or not. This is done to mitigate
reconnaissance activities. Errors on the submitted form on the other hand will be handled by a redirect
either to the referer set in `Referer` header or by providing `onError` url.
If an error occurs the affected properties will be set as query parameters with the type of validation
violation.
The affected properties can be `subject`, `from` or `content`.