Emailed announcements go to tech-squares@mit.edu, a moderated MIT Mailman list. You can authenticate to the admin interface by password (the password is on the officers-only Passwords wiki page) or (for those who have Athena accounts and are listed as moderators) MIT web certificates. The top right corner of the admin interface links to "pending moderator requests" (emails that haven't yet been sent through or rejected) and the list archives (in case you want to look at past emails). We currently have everybody moderated and use the approval step as an opportunity to san-check the email a final time, but if that's too inconvenient, it's possible to remove the moderation flag for somebody regularly sending announcements.
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