This is the second such email I have received recently. Seems legit but I don't recognize the domain in the link to sign, and it seems like the people who make Firefox would know that the people who use Firefox would be hesitant to click. IDGI. Anyone else getting these?
Edit 2024-04-10: Got a new email today and it appears all the links now go to links dot mozilla dot org. I won't flatter myself that this post had anything to do with that, but maybe the same thought occurred to someone at Mozilla. Nice. ✌️
That domain appears to be associated with createsend who do bulk email.
I'm guessing that it's used to track who is clicking on a link.
I agree, seems a bit off for Mozilla to use such a process, but getting emails from the sender to each recipient is no longer trivial if you're doing it in bulk.
That's a great point. I helped set my employer up for a campaign once. Can't have too many hyperlinks, can't use certain words like "free", and IIRC can't use a domain in links that doesn't match originating domain. Too many points against and the destination server chucks it in the bin.