If you're looking to send Voice and Ringless messages, you'll be pleased to know that there is no limit to the number of messages you can send. This means that you can reach out to as many people as you need to without any restrictions.
Furthermore, you only pay for the messages that are successfully delivered. For instance, if you broadcast 100 messages, and only 80 are successfully delivered, you'll only be charged for the 80 messages that were delivered. This ensures that you get value for your money and that you don't have to pay for messages that didn't reach their intended recipients.