Short answer
Your document travels encrypted (HTTPS) from your browser to our servers, is used only for the transmission, then is automatically deleted once the send is complete.
The telephone leg to the recipient's fax machine, however, is not encrypted for any fax: the fax protocol does not allow it.
Your document's journey
When you upload a PDF, it travels encrypted (HTTPS) from your browser to the MondialFax servers. It is kept there for the duration of the transmission, then deleted once the fax has gone.
The service does not look at the content of your documents and uses them for no purpose other than sending them to the number you entered.
What cannot be encrypted
Between the servers and the recipient's fax machine, the page travels over the telephone network, like any fax. The T.30 fax protocol provides no encryption: this leg is therefore not encrypted, with MondialFax or anywhere else.
In practice, the risk lies less in the line being tapped than in the page coming out on a shared fax machine, or in a mistyped number.
What is kept
The request details — names, subject, number, status — remain available for tracking and for the transmission receipt. The document itself is not kept after sending.
Key points
- Encrypted transfer (HTTPS) between your browser and the servers.
- Document deleted once the fax has been sent.
- The telephone leg to the fax machine is not encrypted, for any fax.
- Check the number: it is the first precaution.