Way OT: interesting spam

[YoyoBoy]

Every now and then I get a spam message that seems to somehow bypass my Outlook html-mail settings and show an image without me saying it's ok to do so.

The spam has no attachment and when I "View Source" it appears that the line that loads the image is

[img]cid:bUmaOivjlQG5UFtOa7UI[/img]

So there's no internet path at all for it nor is there one anyewhere in the mail.

Photoshop will only open the image if it has a .bmp extension.

Does anyone know how this is done?

[RErender]

the image is embedded in the email code, just like an attachment. The cid allows the attachment to be displayed in the email.