Blast Credits

  • SMS messages
    • A standard SMS text message can contain characters from the GSM-7 character set which includes all latin characters from A-Z, digits 0-9 and a few special characters (a quick reference guide can be found here; GSM Character Table)
    • An SMS text message cannot be more than 1000 characters total and the message rate goes up every 160 characters
      • Example: I am sending a message that has 480 characters. Given that the message rate goes up by 1 every time I add an additional 160 characters, I would be paying 3x the rate for every contact I am sending my message to. So if I have 10 contacts and my message length is 480 characters I will be using 30 credits to send that blast because I am using 3 credits for every contact 
    • Special characters 
      • When a message cannot be encoded using the GSM-7 character set because it includes special characters it will then switch to the UC-2 character set (this character set supports most written languages) which only allows for 70 characters before the rate increases
        • Example: I am sending a message that has 480 characters which includes some UC-2 characters. Given that the message rate will go up by one every 70 characters, I would be paying 6 times the rate for every contact I am sending my message to. So if I have 10 contacts and my message length is 480 characters I will be using 60 credits to send that blast because I am using 6 credits for every contact
  • MMS messages
    • Media that is under 1 MB can be attached to text messages 
    • When including media, the text message rate automatically changes to 3x the rate
    • The length of the message cannot exceed 1000 characters but the rate does not go up every 160 characters and remains constant at 3x