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. Learn more.