I really liked the SMS and Viber messaging service. The prices are reasonable (although they depend on the operator), so you can use it just like other similar services. The personal account is a huge plus: it's convenient and easy to understand, contacts can be imported easily, and the database is manageable. You can set up scheduled messages and personalize them. There's also a great feature where messages are sent through both channels — if the subscriber is on Viber, then the SMS isn't sent. This helps save money since Viber messages are cheaper. There are also nice bonuses for new users, like 10% of the top-up amount or a small amount added to the balance after completing a quiz. It may seem like a small thing, but it's nice.
