This is an email from Facebook. After I switched my language settings it started sending me mixed language emails.
And this is a terrific feature that I just noticed. I’m probably way behind the curve. Clicking the button downloads an ICS file which contains all the events invitation and opens with your favourite calendar program.
Have been using this for ages. It is really very useful. Only problem is that people are chronically shite at filling in the information in a useful way on the Facebook events and so you usually have to go through and amend it. Does still save a fair amount of time.