/api/email endpoints.
DELETE /api/email/
Clear all email related settings. You must be a superuser or have setting permission to do this.
POST /api/email/test
Send a test email using the SMTP Settings. You must be a superuser or have setting permission to do this.
Returns {:ok true} if we were able to send the message successfully, otherwise a standard 400 error response.
PUT /api/email/
Update multiple email Settings. You must be a superuser or have setting permission to do this.
PARAMS:
settingsmap.