Outbound Link Summary:
23 years ago
it's spam, bad and annoying and all that. but it's also smart shit: the urlgrey spam script.
comes into your mailbox and executes when you display it. a bloody mess to decrypt what it really does. at least sending some mails to a bunch of other people. and eventually you get the error receipts because they are undeliverable (the mails, not the people).
so better turn off the preview pane in microsoft's mail clients or even generally disable any script execution in your internet security settings (i won't write this twice).
or remember what john wayne used to say: no risk, no fun.