For the Promotional messages, you have do the DLT registration as per the TRAI norms( for India) and need to register your business details to get approve.
Navigate Campaign from menu bar.
Select Create Campaign and click Add a new Promotional Template and click Create Own Template.
Enter the Template name,Message and Template ID ( which you got from the DLT platform)
Choose Targeted customers from the drop down and click send offer.
Note: For each campaign messages after getting the Template approval from the DLT platform,need to share the approved template content and template id to email@example.com . After the acknowledgement from miosalon team you can send the campaign messages,
Above DLT procedures is only for India.