Email to Fax and Fax to Email FAQ

Email to Fax and Fax to Email FAQ


It is no secret that InterFAX is Australia’s only true Business Grade Solution on the market. It is for that reason we are the most preferred provider to so many large corporations, big businesses and developers.


Here are some frequently asked questions. For any further information, feel free to call our office on 1300 667 355 or click here for an online support.


  1. Why would I choose InterFAX over any other company for my business faxing? A. InterFAX uses ISDN (Integrated Services Digital Network) lines and not ‘Fax Over Internet Protocol’ (FOIP) technology. ISDN is widely used for professional audio and broadcast applications where digital clarity with integrated telephone/fax services is specifically required.

    This ensures high quality, speed and reliability, essential for any business. FOIP may be cheaper but may not always offer the same level of reliability as ISDN, therefore not always the most suitable product for businesses.
  2. What restrictions are there with an InterFAX account? A. InterFAX offers business grade fax solutions whilst providing very few restrictions for customers. With no lock-in contracts and no expiry of fax credits InterFAX offers a fast and highly reliable service, looking after our customers needs.
  3. Do you have subscription periods? A. No. InterFAX does not have any subscription period for a fax send account. Simply purchase fax send credits and once the credits have been used, you can repurchase at your convenience. There is no expiry or time frame for sending on fax credits.

    To receive faxes, we offer month by month accounts. There is no minimum time frame for use and accounts can be cancelled at any time. Click here for more details.
  4. Can I send a broadcast with InterFAX? A. Yes you can send a fax broadcast via InterFAX, click here for instructions. If you have large fax documents or multiple fax pages, please contact us to discuss other bulk fax options.
  5. Why did my fax take longer and cost more to send than what my effective per page rate? A. Faxes are calculated on time per page. Most standard faxes should take no longer than 60 seconds to send. Anything transmitted at 60 seconds or less is charged as 1 unit. If a document has any of the following inclusions, this may contribute to your fax taking longer to send:
    • Detailed shading or COLOUR.
    • Watermarks
    • Large images
    • Dark borders
    • The document has been scanned
    When sending a fax, the system will transmit every pixel to paper. If there are large amounts of pixels to transmit, this will affect the time it takes to convert to paper and this may ultimately cause your fax to cost more.
  6. Why do developers use InterFAX? A. Fax integration is a major feature of the InterFAX solution. We provide developers with a free account for testing as well as the full access to the free API for integration. InterFAX is highly compatible and offers developers flexibility. For more information, click here.
  7. What types of API does InterFAX provide? A. InterFAX offers a choice of XML Web Service, Email Interface or ActiveX COM Object. Click here for more information.
  8. How long do my send credits last for? A. There is no expiry on InterFAX send credits. See InterFax Terms and Conditions.
  9. How are the InterFAX prices calculated? A. InterFAX charge only for successfully sent pages. Unlike many FOIP providers where charges are based on a 30 second send, InterFAX charges are based on a 1 minute send. For full pricing details, click here.
  10. What happens when my credits run out? A. When your credit balance is running low, you will receive an email at 80% usage, 95% usage and another when your account is empty. You may also receive a phone call stating that your account has been depleted of credits. It is then up to you whether you wish to top up your account. If you have a fax pending credits, your fax will remain on hold for 24 hours in which you have this time to top up your account. If you add credits during the 24 hour period, your pending fax will then begin to send. Failure to add credits within this time will result in the fax timing out.
  11. Can I send faxes from my accounting program? A. If you are able to email from your accounting program, then you can fax it.
  12. Can I send and receive a fax from my PDA? A. Yes. Faxes can be sent via most Internet/Email enabled mobile applications. For more information, click here.
  13. Can I send attachments with InterFAX? A. Attachments are easily sent via InterFAX. Click here for more information.
  14. How do I pay for my InterFAX service? A. InterFAX offers a fully automated service whereby you can purchase online via your account. In some cases, invoiced accounts are also available to approved customers. Conditions apply.
  15. Can I download my invoices via the InterFAX System? A. You can easily view and download all your invoices via your admin site. Click here to view instructions.
  16. Can I keep my existing Fax number? A. Yes. Australian customers can port their existing number over. Restrictions on current carriers do apply. Contact us for more information.
  17. How do I change the e-mail address to which my faxes are forwarded? A. Yes. When you sign up for service, you enter an initial address. After registration you can log into your account and add as many additional addresses as you wish.
  18. Can I choose my inbound virtual fax number? A. No. When you sign up for an InterFAX inbound number, you instantly receive an (03) fax number. If you require a number that is relevant to your location, simply contact us to request your alternate 02, 07 or 08 number. Call 1300 667 355 or email interfax@faxem.com.au Please choose a location from our list, click here.
  19. How many pages can I receive per month with my inbound number? A. 1000 pages are included with your inbound account free per month, 0.05 cents per page thereafter.
  20. I have a large quantity of incoming faxes. Can InterFAX receive several faxes at once? A. Yes, Interfax can receive a large number of faxes at a time. Under normal conditions your senders will never receive a busy signal.
  21. Some companies only provide fax numbers for capital cities. What numbers does InterFAX provide? A. We can offer a fax number in over 67 different locations across Australia. Click here for your nearest town.
  22. What happens if I no longer require the InterFAX service? A. Our send credits are non refundable so they will remain in your account until they have been used. If you no longer require your service, simply contact us via email stating that you wish to terminate your account. If the account has been inactive for an extended period of time, you may be contacted by InterFAX via phone and the account may be terminated.

    NOTE: For inbound accounts; if you cancel prior to the end of the month, you will not incur another payment for this service.
  23. My other email to fax provider will only allow me to send PDF and Tiff documents. How many file types does InterFAX allow? A. It is important that InterFAX supports a large selection of file types for our business clients. This is one of the many aspects that separate us from other providers. For a complete list of supported file types, click here.

Contact us for further information.