Note
As of 29/12/2017, SMSkaufen seems to have discontinued the fax service. For alternatives please search "fax by email" on the internet. The only important thing is that Xentral can store an email address of a similar provider.
Old text for SMSkaufen as an example:
Connection of a service to send faxes via xentral (analogous to e-mail, an extra service for electronic faxes) http://www.smskaufen.com/
The subject for sending faxes from SMSkaufen must be structured as follows:
Id#pw#empfänger#absender-Name#absender-nummer
-
id=customer number
-
pw=password
-
recipient= recipient's fax number
Variable for the fax number of the customer: {FAX}