Be sure to check EVERY folder in your email, including spam, promotions, updates, etc. Mine was in the gmail “promotions” tab and I almost missed it. You might still have a chance!
Good suggestion, this is how I found mine as well. I’m on Gmail as well, but I chose to look in the “All Mail” section.
Oh my god, I thought I missed out on this flight like I had for the others. Really appreciate you bringing up the promotion tab, I got selected!
I think I’ve lost hope l, everyone else has gotten in and I’ve no life’d every halo game, used to be on these forums non stop and I joined the flight when they first announced it. Actually I did a long time ago for the mcc flights but my “verify email” email was in the trash folder. Had no idea I wasn’t enrolled until 343i said how to enroll for infinite. Hoping there’s a chance but we’ll see.
I also have a high end pc so I was hoping I’d be selected so that I could help test. Fingers crossed I guess 
Mine was in junk folder. Check everything lol