Some emails to Comcast address are mis-delivered to another family member
I belong to a membership group that sends a monthly email to our members, with a pointer to our monthly newsletter. Currently we send one email to about 130 BCC'd recipients.
That seems to work fine for all but one of our members, who has a comcast email address. She says the newsletter email is always delivered to her husband, who has a different comcast email address. But I (and others) can exchange regular emails with her just fine.
How can this be happening?
I don't know how their account is set up, but have speculated that his user-name is the account name, and that under some circumstances, email to others on the same account might be re-directed to him. But that's just a wild guess. Any help?