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Below you can find answers to the most frequetly asked questions. If some question is missing you can send us your question at the end of each section.
The most frequently asked questions relating to DuoFAX accounts, invoicing and payments are answered in this section.
Here you can find the most common questions relating to faxing with DuoFAX. If you do not find what you are looking for, please add it at the end of this section.
The most common questions relating to the sending SMS are answered in this section.
If you have a question related to the sending of real letters, you can ask it here.
"With DuoFAX.com there is no need to install anything, it is very simple and it is very reliable fax service.”
Mirek Merunka, ISDN server