See the Transactional API docs here Transactional docs are also hosted on your installation at your own domain on the email marketing platform frontend ...
You will only see your API key if you log in as a user account on the frontend, if you impersonate a customer account as a backend admin the API key w ...
Everything you need to know to configure a connecting application to send email through your platform using transactional SMTP Relay ...
You can create saved templates to use for your transactional messages. ...
If you use a transactional template that has already been tagged, additional tags used in the header or API request are discarded. ...