Send a test fax and see what arrives
Your fax goes to our own test line, and we show you the page as it came out at the other end. $2.99 flat, charged only when delivery is confirmed.
Send a test faxPay only when delivery is confirmed
How to send a test fax
Add your pages. Photograph them with your phone or upload a PDF, and add a cover page if you want to see that too.
Skip the number. Your test goes to our test line, so there is nothing to type.
Pay $2.99 and watch it send. When it arrives, you see the page as our line received it.
How it works
You add your pages the same way you would for a real fax: photos from your phone camera or a PDF, with an optional cover page. Instead of typing a number, your test goes to a ProntoFax test line.
Our test line receives it like any fax machine would. When it arrives, we show you the received page on screen and email you a copy, with the time it came in and how many pages made it through.
That is the point of the test. You see the actual result, at the resolution and contrast a fax machine prints, before you send the fax that matters.
What it costs
A test fax is $2.99, the same flat price as any fax. Your card is held, not charged, and the charge only goes through once delivery to our test line is confirmed. If it does not go through, you pay nothing.
Every delivered test comes with a code for 33% off your next fax. It works once, with the same email address, for 5 hours after your test is delivered.
If our test line is busy
Tests go to each of our lines one at a time, so no one ever sees another person’s pages. If another test is finishing, yours waits and starts on its own a moment later.
If no line frees up within 10 minutes, the hold on your card is released and nothing is charged.
Testing your own fax machine
If what you want to check is whether your own machine still receives, you do not need the test line. Send a normal fax to your own number, and if the page comes out of your machine, it receives. You pay only if it is delivered.
If something goes wrong either way, why your fax failed explains every reason a fax can fail and what to do about each one.
Test with the real thing
Use the document you actually plan to send. A test of the real pages shows you whether the small print and the signatures survive the trip, which a blank page cannot.
Why test with ProntoFax
- See the page as it arrived, not just a confirmation
- Flat $2.99, charged only if it is delivered
- 33% off your next fax after a delivered test
- No account or sign-up required
- Works from a phone, with nothing to install
- Your test pages are deleted after 30 days
Questions about test faxes
Is there a free fax test number I can send to?
Not one we publish. Our test line only takes tests sent through ProntoFax, one at a time, so every page can be matched to the person who sent it. A test costs $2.99 and you only pay if it is delivered.
Why is the test line’s number hidden?
So that only tests sent through ProntoFax reach it. Each received fax is matched to the test that holds the line, and a fax from anywhere else is never shown to anyone.
What does the test show me?
The page as our line received it, how many pages arrived, and when. It is the same image a fax machine would print, so you can judge the result before you send the real fax.
How do I test whether my own fax machine works?
Send a normal fax to your own fax number. If the page comes out of your machine, it receives. That uses the regular send flow rather than the test line, and costs the same $2.99, charged only if it is delivered.
How long is the discount code good for?
5 hours from the time your test is delivered. It works once, with the email address you used for the test, and takes 33% off your next fax.
How many pages can I test?
Up to 25, the same as any fax, for the same $2.99.
Try it before it matters
One test to our line, $2.99, charged only if it arrives, and 33% off your next fax.