SMS with number masking
There were once we can put any characters to the sender column for all our messages. Since a few years back (approximately 4 years) the Cell phone operators in Malaysia start to ban the function. Now, for all mobile operators in Malaysia, you can send only digits as sender
However, level 2 short code is still able to send with any character as sender ID. That is why you are receiving message such as "Maxis gift" at your phone. They are genuine from Telco.
With our number masking feature, you can send SMS with digits as sender ID. But sometime, it wont work and the Cell phone operator will replace it with any numbers. This is true for all providers, except the Cell phone company itself.
SMS with number masking is not capable of doing 2 way SMS (sending SMS and receiving at your email).