Popfax.com is a leading provider of internet fax services worldwide. It allows end-users to send and receive faxes using email or web interface.

The service is edited by the incorporated company POPESCO, and has been commercialized, based on a "software as a service" business model. It is both a solution for individual professionals (SMEs and SoHos) and for corporate customers who use this outsourced solution to meet their faxing needs. It can either replace fax server equipment, be used as a mobile fax fleet, or fit into a transactional application.