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Confirm if the subscriber is already subscribed to the list.
For Dynamic/Smart lists use the command line in list manager and type the following: REVIEW listname (RCPT NOH MSG ALL TOPICS BY NAME
Look for pending confirmation requests (if double opt-in is enabled).
Verify if the address is on a suppression list (e.g., previously unsubscribed, bounced, or blacklisted).
Log in to the LISTSERV web interface with your list owner credentials.
Navigate to your list management dashboard.
Look for the “Subscriber Management” section.
Search for the email address in question.
If the address does not appear as an active subscriber but has a status message like “Bad Address”, “Bounced”, “Deleted”, or “Hold”, it may have been automatically placed on the auto-delete/suppression list. Please reach out to your listserv administrator for additional support.
3. Review Delivery Logs
Determine whether the message was:
Delivered successfully
Deferred or delayed
Log in to the LISTSERV web interface with your list owner credentials.
Navigate to your list management.
Select List Activity Reports
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