EssentialFax is free to RKS Fax owners.
• EssentialFax is 100% downward compatible with RKS Fax.
• Your RKS Fax serial number will work with EssentialFax.
• If you prefer to download the old version of RKS Fax please see below.
PLEASE NOTE: This does NOT apply to MightyFax, which is a different product altogether.