Requirements for the content and format of SMS messages
In SMS you can send only text messages. Images and buttons are not available.
Allowed SMS length:
If the message exceeds the specified length, then it is split into 2 parts. The second part of the message and the following are of length:
When you add emoji to the text, remember that each emoji takes several characters. For example, a smiley is 8 characters long, a heart is 7 characters long, etc.
Emoji messages cannot be registered in service and transaction messages. Emoji can only be used in promotional dispatch.
Chars used field shows how many characters are used in your message, including emoji transliteration.
For more information on the rules for an SMS Sender ID, go to the «SMS Sender ID requirements» section.