"It is becoming increasingly clear: In the Corona crisis, instant messaging services, Facebook, Twitter and Co. have become channels for the mass dissemination of half-truths and untruths," says the internetworld.de portal. And what about e-mail newsletters? The fact that e-mails and thus also e-mail newsletters are among the most reliable means of communication is not only true these days. The United Internet Media study "E-Mail for you 2.0" showed that e-mail is perceived as a trustworthy channel by 76.1 percent of those surveyed, while significantly fewer said the same about WhatsApp and social networks.