Faxing without a faxmachine

InterFAX - Faxing without a faxmachine

GTC InterFAX makes sending faxes very easy: the handling is just like sending and receiving e-mails. There’s no need for a fax machine, installation of any special software or additional lines! Send faxes with the GTC InterFAX service without monthly- or basic fees! You will only be charged for successful sent fax pages, according to the destination country.

Your advantages

  • Faxing without a fax machine
  • No additional hard-/software
  • Without basic costs
  • Extensive developer interfaces

Online customer area

No investments or installations: an access to the internet and an e-mail account will do, to send and receive in your secure cusomter area faxes from anywhere in the world.

Easy dispatch

Send directly out of your e-mail account - your fax as an attachment. Or use your online customer area. For automated processes you can use the integrated developer tools.

Your fax number

From service numbers in Germany, land line numbers in Austria and Switzerland up to international numbers: You receive all incoming faxes directly online or via e-mail.


Distribution lists

Creating or importing distribution lists for a regular dispatch to several constant recipients.

Individual fax headline

Individual fax headline and sender ID can be set individually by yourself. The number of dialing attempts can be chosen freely. 


Lists containing outgoing faxes with status, time, as well as search function and view, have optional re-send of already sent faxes.


InterFAX - how it works

    • Fax dispatch via e-mail
      Send and receive your faxes as a normal e-mail: as an attachment.
    • Fax dispatch from your customer area
      Send and recive your faxes directly from your customer area – quick and straightforward.
    • Fax API for your applications
      Adjust your software directly with free libraries and just a few clicks.




    Martina Assenmacher

    Ingram Micro Pan Europe GmbH

    "The sending of our newsletter takes only a few minutes – nevertheless it is handled in a very professional way. We are not in need of additional software and do not have to enter a long term commitment. That’s how we stay flexible. Furthermore we really appreciate the support of the attentive GTC-employees."


    Uwe Streb

    Festina Uhren GmbH

    "The customer service gave us great advice. Now we are getting much more out of our actions, can make campaign comparisons and achieve exactly what we want."


    Jürgen Klein

    DATEV eG

    "GTC is our long-standing partner for sms and e-mail boradcasting and is very reliable. Thumbs up."


    Bettina Holz

    X-PERION Consulting AG

    "Our employees are on the road throughout Germany, partly even in Europe. A regular coordination is essential here. We are completely independent with GTC central meeting: all participants are dialing themselves in via telephone. It doesn’t matter, where the participants are. Even the dial-up from abroad happens at low costs, due to international access numbers."


    Edgar Augel

    Stadtmobil carsharing AG

    "E-mailings created with the template editor look great. In addition, our mailings now always adapt to the size of the receivers with responsive design. Fantastic."


    Roland M. Rupp

    Schweizerischer KMU Verband

    "The service at GTC leaves nothing to be desired. Also the simple operation, the evaluation and the multilingual menu is great."


    Christof Korr

    CreditPlus Bank AG

    "An sms will not be overlooked. Therefore, sms-mailing is our choice when it matters. With GTC, we have found a professional, with which everything runs great. And what is especially important to us is that all data remain in Germany."

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