When you send campaigns that include text messages with Attentive, each text message is composed of one or more individual SMS message segments. This is an important distinction as you are billed based on the number of message segments you send, which may vary from the number of messages received by your subscribers. A message segment can be up to 160 characters long, and includes your automatically prepended brand name. If you include media like an image, GIF, or video, then one of your message segments changed to an MMS message
When you write a text message in Campaign Composer, you can see:
- The estimated remaining characters: How many characters remain before your message segment count increases by one.
- Message segments: The total number of message segments, as well as the message type, that will be sent to subscribers. Messages will either be 1 or more SMS (text only), 1 MMS (media with up to 160 characters of text), or 1 MMS + 1 or more SMS.
For more, see How message character counts are calculated with Campaign Composer.