Thank you for your reply.
I have no sieve scripts. I have never done anything special with my spam settings.
I have had used the subdomain email address for my banking for years - less complex than Bill's message: All of my financial institutions go to
bank@alias.domainname.com - this works fine as an address almost all the time. I get emails from all my banks and credit cards regularly ... except these verification emails from this one credit card.
And that one password reset email from one institution (sending to a different alias, without subdomain addressing).
And one time I had a colleague whose emails I never would receive, but that was years ago.
Thanks again.