SIP fax sending software?

Eric Kuhnke eric.kuhnke at
Sat Jun 2 01:11:56 UTC 2018

I would recommend simply outsourcing it to for $2 a month. Port
your fax DID to them.

Incoming fax arrive as PDF in your choice of email inbox.

You can send outbound fax from a predefined list of your own email
addresses, destination to fax at Put the destination phone number in
the subject line, attach the document to be faxed as a PDF.

There is also an https web portal for uploading documents to be faxed,
there is no tacky addition of advertisement.

On Wed, May 30, 2018 at 1:13 PM, John R. Levine <johnl at> wrote:

> Can anyone recommend software that sends faxes over SIP?  I have plenty of
> inbound fax to email services, but now and then I need to send a reply and
> it looks tacky to use one of the free web ones that put an ad on it.
> I know that if I wanted to pay $15/mo there are lots of lovely services
> but we're taking about one fax a month, maybe, here.
> Ideally it'd take a postscript or PDF or Word document and a phone number
> and fax it to that number.  I have Ubuntu, FreeBSD, and MacOS boxes.  Any
> suggestions?
> Regards,
> John Levine, johnl at, Primary Perpetrator of "The Internet for
> Dummies",
> Please consider the environment before reading this e-mail.

More information about the NANOG mailing list