How many characters are there to one message credit?

A single message allows for up to and including 160 standard characters*, including spaces.

If you type more than 160 standard characters, this becomes a "multi-part" message, and each "part", including the first part, has a limit of 153 characters (7 characters are used by invisible headers and footers, indicating the part of the message being sent).

For example:

• Message "A" has exactly 160 standard characters = 1 credit
• Message "B" has 310 standard characters (153 + 153 + 4) = 3 credits 

The following table provides a quick reference:

Once you have 161 standard characters or more, you will see your Credit Cost (per contact) increase (1),(2).

* The use of emoji's and unicode will affect character limits, i.e: the limit for one unicode message is 70; multi-part messages are 67 characters each. Find out more about this here.

Note: If you utilise the opt-out link it contributes to your character count.
The opt-out link is 29 standard characters, including spaces.

What is the maximum character limit for an SMS campaign?

You can send a maximum of 1600 standard characters*, or 11 credits per contact, per campaign.