Hi @geminilabs thank you for your help!
I checked the Action Scheduler, and I can see the notifications with status “Complete” there.
I can also verify that I am sending from an email address using the same domain as our website.
I installed Check & Log emails, did a couple tests, and it shows WordPress is sending the emails. I’m still not receiving them in my email — not in SPAM/junk — not anywhere. So I guess this is now an investigation with my email provider.