One provider for all

E-mailings, fax-mailings, sms-mailings, conference calls and more

GTC is your service provider for fax, e-mail, SMS and telephone conferencing. You do not need any installations or investments to use our services. Do you have special requirements? Our development department will be happy to realize special solutions for you!

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Individual advice

Our competent customer advisors will be happy to help you

Without investments, without installations, without specialist knowledge: you can use our systems directly. But that's not all: we are also there for you personally! Our customer advisors will be happy to provide you with active support - or implement individual solutions for you.

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Server location Germany

Maximum security for your data

The security of your data is at the heart of all of our services. Redundant servers at different locations in Germany, equipped with the latest security technology ensure the availability of our systems in every situation and the security of your data. Of course, all of our services are GDPR compliant.

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Solutions for your communication needs

GTC is your service provider for solutions by e-mail, fax, SMS and conference calls! To use our services you do not need any investments or installations: just internet access. Do you have special requirements? Our development department will be happy to find special solutions for your needs!

Your advantages with GTC

No investment

To use our services you do not need any investment or installations. Access to the internet is enough - and you will always benefit from the newest technology. 

Easy handling

Our products are designed to be used easily. The handling is self-explanatory.

Customer service

No impersonal call-center: our customer consultants are all experts and will be glad to help you by phone or in a webconference!


Highest safety

Our servers are installed redundant at different places, all in Germany. They fulfil the highest standards of security and safety.

No fixed costs

There are no acquisition or other fixed costs. You will not be obligated to use our services for a certain time.

Special solutions

Our own development team will be happy to find special solutions for your special requirements.


No time? Here you can directly get your offer:


"We really appreciate the newsletter tool because we jsut know that everything will be on point"

Christine Fröhler

Communication Consultants 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."

Martina Assenmacher

Ingram Micro Pan Europe 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."

Uwe Streb

Festina Uhren GmbH


"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."

Edgar Augel

Stadtmobil carsharing AG


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

Roland M. Rupp

Schweizerischer KMU Verband


"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."

Christof Korr

CreditPlus Bank AG

Among our satisfied customers
DHL großBosch großCewe colorDitschUmwelttechnik BWKlett-Cotta großAachen Münchener großFestinaIvacare Aquatec großDeguDent großSVS großCommunication Consultanst GmbH großCosAG großAmnesty International großIngram großLawinen-Warndienst Bayern großDer deutsche Wirtschaftsbrief großWeka groß
+49 (0)7 11 - 4 90 90-0
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