SYMPTOM:
In Strategy Distribution Services 9.x, when sending a report to many users in an email subscription, only one user itself is displayed in the received email.
STEPS TO REPRODUCE:
Follow steps below to reproduce the issue in Strategy Tutorial project:
NOTE: In the above example, Strategy user Brian Kelt's email address is the mail server user Zhu, Junhua's email address. So this email address is resolved as the user name by the mail server.


CAUSE:
This is working as designed. In Strategy Distribution Services 9.x, only the user who receives the email is displayed in the To field.
ACTION:
Upgrade to Strategy 2020 to resolve this issue.