Haven't a clue about email security!
Emails are a very insecure form of communication (which is why more and more organisations are implementing secure message facilities). All information in them can and is used by criminals to carry out fraudulent activity in the sender or recipients name. This has been known for decades. However it is clearly a totally alien concept to eonnext. They insist on sending out monthly bills attached to emails with both the bill and the email containing large amounts of personal and account information, despite the fact that I have set all of my Message Management options on the eonnext website to "No". Other organisations such as banks and cedit card companies just send a very brief email telling you your monthly statement is ready with virtually no personal information in it, and what there is is disguised with *s. If anyone from eonnext reads this, contact the Consumer's Association and ask them to give you a presentation on email and text message security: you obviously haven't got a clue!
8/10/21 Hello, Emma, are you there? I sent you my name and email address on 5/10/21 as you requested but have heard nothing from you. I have written a document to support what I said above, including proof that you have breached accepted email security measures. Contact me and I will send you a copy. Zeus.
Reply from E.ON Next Energy Ltd