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This is a companion discussion topic for the original entry at https://english.best/questions/preview/5552-if-you-want-to-submit-a-document-that-contains-a-a-fax-might-be-better-than-an-e-mail
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Fax will remain the communication channel of choice for most government agencies and businesses in Germany for the next 40 years or so, while other countries develop technologies such as 5G, 6G, AI and blockchain.