Emails don't arrive for newsletter signups

Ongoing issue since October 21 2025 where new signups to my newsletter do not receive an email confirmation request, resulting in all new signups remaining in a 'Pending' state. Currently 13 users in this state. 

<img width="328" height="652" alt="Image" src="https://github.com/user-attachments/assets/3fc91d74-2cd4-4b7c-99da-92a88f3e1f07" />

