Which setting(s) would prevent Discourse from emailing an old user?

[jomaxro (Joshua Rosenfeld)]

Blocked will stop mailing list mode, suspended will prevent all emails (except for staff PMs).

See

Description of various user states in Discourse (Admin / Moderator / Staff / Developer / Other)

Discourse has many built in user states, the following describes the meaning of each state and basic storage implementation: Admin Admin users are the superusers in the system, they can: Impersonate non admins Change site settings Create groups Amend site customizations Perform all the actions moderators can perform Read any personal message Create, delete and modify categories Ignore category permissions to view private categories Storage: The boolean field admin in the users table flags …