The prepaid is a program you will pay in advance for the number of credits you want to add to your account. you can send messages as long as you have credit at your account
for Prepaid we grant you a long expiry date, up to 365 days which is more than enough to consume all your credits.
you may ask your account manager to issue a bill for you before the end of the month and after you settle the bill, you may resume sending messages again with a fresh cap
Yes, the fee of registering every additional sender name is 230 riyals annually, including tax, which is the fee for registering the senders names, paid to the Communications and Information Technology Commission