How Special Characters are Counted in Bulk SMS Services?
This is going to be a very small post explaining “How Special Characters are Counted in Bulk SMS Services” from any bulk SMS aggregator across the world.
We have been getting several mails from our resellers and customers to integrate our SMS API and understanding the SMS Characters count policy. So here it goes,
Special characters such as
_ # () < > % : ; . ? * + – / & ∼ ! = , ” ’
|^€{}[]~
are treated and counted differently from character to character.
We have also explained in this post, SMS Length Calculation Explained, How SMS Credits are Counted?
Basic Character Set: GSM 7 Bit Alphabet:
Following characters are counted as single character.
[html]@£$¥èéùìòÇ’Øø’ÅåΔ_ΦΓΛΩΠΨΣΘΞ’ÆæßÉ !”#¤%&'()*=,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑÜ’¿abcdefghijklmnopqrstuvwxyzäöñüà[/html]
Extension Table Characters:
Following characters are counted as two characters.
[html]|^€{}[]~[/html]

Hope this post clarifies many of our customers doubts and should help them in integrating our SMS API in your project.
To test live for yourself with English and unicode languages, SMS Length Calculator
If you want to take up a demo for bulk SMS services, don’t hesitate to contact us.