It seems, that is tricky to make a Screenshot with pulled down Notification, every time i tried it, the Notification snips back to the top, if i trigger the Screenshot. However, i found a small Workaround. If i disable the Confirmation Option for Deleting Messages, i can now delete the Mail directly from the normal Notification, without the need for a second confirmation.
If i found a way to make a Screenshot, i will send you one.