What do I need to do to add subscribers?
It is required that you provide confirmation that all of your subscribers have explicitly opted in to receiving SMS or MMS messages from you PRIOR to you sending them a message.
Please email firstname.lastname@example.org or look out for a welcome email that NEEDS your response.
We recommend using Keywords to add your opted-in subscribers.
You can also copy and paste your opted-in subscribers.
Uploading your opted-in contacts is only for the High Volume Plans