Alphanumeric senders are allowed but might be changed to a random international number.
The mobile networks in Kuwait all support Unicode messages en the GSM character set. Concatenated SMS is supported in Kuwait.
Two Way Messaging
At the time of writing we don't offer Two Way Messaging in Kuwait.
Delivery reports are not consistent as most of the carriers in Kuwait do not support DLR's.
Only Wataniya supports handset DLR and Zain and Viva support SMSC DLR.
SMS restrictions in Kuwait
Because there is no dedicated telecom authority, the operators have each taken measures to protect themselves from abusive behavior. Technically everything is allowed, but in practice the operators have very restrictive policies. All operators have some degree of filtering in place to counter spam.
Because of this we can't guarantee delivery of your preferred sender ID.
Numeric senders and short codes are allowed.
There are no content restrictions for SMS in Kuwait other than those that prevent abuse (spam, phishing, etc).