You can create a free Zixflow account and use our pay-as-you-need wallet system without worrying about a monthly charge. You only have to pay a flat rate for each message you send.
For example, if you send 100K SMS at the flat rate of $0.01 per SMS, you only have to pay $1000 (100,000 x 0.01). Also, the flat rate per SMS varies by country. So, to know more about country-specific pricing, reach out to us.