When you want to send out text message campaigns that are greater in length than a single text message (160 characters), our platform enables you to “split” the campaign into 153 character blocks and send them out as consecutive SMS messages.
Splitting an SMS Message
Splitting an SMS Campaign into multiple text messages is accomplished by checking the appropriate box in the Message Text area of the SMS Campaign Window. The split SMS option is automatically enabled if you have entered more than 160 characters and disabled if you have less than 160 characters.
For more information about the SMS Campaign Window, see the support topic How to Create SMS Campaign.