not receiving "opt-in" email

Hi, my name is Elena, San Jose Toastmasters Club Club 1577 sjtm.toastmastersclubs.org
I'm trying to send an "opt-in" email to a new member, Marilyn Utz, but she doesn'r receive it,
Her address is marilyn@marilynutz.com. We tried to delete her name and re-enter it, and re-send this "opt-in" email multiple times, but she never receives this "opt-in" message.
Thank you for your help.

I resent them the email... Please ask them if they received it....

it seems that marilynutz.com has blocked email from FTH. I have verified and we are not blocking access to her mail server.

Thank you, Brian! I will suggest her to create another email box.
Elena

Thank you, Linda!
She hasn't received your message too. I suspected that the problem is on her side, and Brian below just confirmed it.