This morning, starting just before 6:00AM PST, one of our IMAP mail servers started causing errors for a small number of mailboxes assigned to it. Symptoms included failure to retrieve emails, failed logins, and general slowness. Our operations team was notified by Customer Support of the resulting email outage as of 9:00AM and restarted the impacted server to return it to normal service by 9:15AM. At this time, email service should be stable. Our Operations team will be working to better isolate future failures in the future, ensuring a quick return to stable, reliable service.