I receive emails from email@example.com
Is this a legitimate email address for Virgin - I'm a little suspicious about the .em part
Questions have been posted before about that suspicious looking address . See this one for example, (very much the same as yours in fact) https://community.virginmedia.com/t5/Email/Email-received-from-Virgin-Media but there are many others.
At the time VM staff advised the address was legitimate but legitimate email addresses can always be spoofed (faked) so still be wary of any links in the email.
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Welcome back to the community and thanks for taking the time to post. I can confirm that the email address is correct and a legitimate email address as confirmed in the link that coenoby posted in the last message. Its always best to check these things as you can never be too careful.