Concentrating on building long term relationships with customers both large and small Nextiva services over 80 nationwide markets. As a market leader, Nextiva vFAX has lifted more IP communications awards than any other brand, and strives to maintain their leading position within the industry. No need to change a thing, you can fax using your existing fax equipment, via email, or through mobile devices. Their 30-day trial offer is the perfect way to try and test vFAX yourself.