Once you have your list of SMS contacts and an SMS message, you can send an SMS campaign.
Go to Campaigns in the top-nav and hit New SMS Campaign
This will take you into the SMS campaign flow.
The first thing is to choose a message. If the message you want is not on the first page, you can flick through each page or search by message name. Once you have found your message, select it.
You will see that the lower info-bar tells you how many characters your message has and how many sms credits this message will use per contact; this gives you an idea of how many credits your campaign will use up, especially if you have multi-part enabled.
It is also worth being aware that if you have personalisation in the message, only the characters for the custom field tag are counted. Each contact in the list(s) you schedule to could have more or less characters, which could result in more or even less credits being used, that cannot be counted here.
Once you have the message selected you can hit next to choose contacts…
You have pages of all of the lists and their segments, you can choose one list or segment or more than one combination of lists and or segments. You can also search for a specific list.
Bearing in mind, the previous step told you how many credits per contact your selected message would likely use, you can balance that with your list/filter selections’ contact count to make sure you have enough credits.
Note: it is a good idea to clean your list before you enter the campaign flow, that way you will know that the record counts here are accurate. If you happen to have a mix of email & sms records in the same list, you will be wise to create email and sms segments, to ensure you have accurate record counts for each record type.
Once you have chosen the list(s) you want to send to, you can hit next.
The final step is to set when it should go out, with the option of sending it slowly if you feel the need
Once everything is set, hit the green Start, check the final confirm window and hit go.