The disclosure relates to a method of transmitting fax messages from at least one fax message sending device to at least one fax message receiving device. The method is implemented in a fax communication device driver. The method comprises the steps of receiving, from a fax server software module, fax data associated with a fax message to be transmitted from a fax message sending device to a fax message receiving device; deciding, on the basis of at least one predetermined routing rule, whether to route the fax data to the fax communication device or to the cloud provider; and based on a decision result, selectively transmitting the fax data to the fax communication device or to the cloud provider for transmission to the fax message receiving device.