To send a batch outbound message the first step is to create it. If you haven't created it yet and need help with that, read this article on how to create an outbound message.
Once the review is listed as approved, you will be able to set it up for sending:
Click on the message with approved status.
Select batch delivery.
Upload the file with the message recipients.
Upload an excel file (.xlsx) containing the columns:
Country code
Phone number
Click Continue.
Select the required fields in the columns.
Click the Load button.
Click Send message.
