Non-English (Dutch) Mastercard spam
As always, when you hover over a link, it becomes obvious that the email is not legitimate:
If you give in to temptation (of course, never do so unless you are working within a properly sandboxed virtual machine that you can “nuke from orbit” if needs be) you will see the following. It’s pretty well coded, each [?] works, an error is triggered if a field is not properly completed, and you see a nag window if you try to close the window.