One side effect is that Capital One thinks that it has the wrong email address for me:

  "You haven’t opened an email from us lately, 
  so we’re checking in to make sure your contact
  information is up to date."

Set up an email filter based on the Subject line to trash them.

Those are my favorite kind of spams.

1. https://www.fastmail.com/blog/fastmail-keeps-you-safe-from-s...