All systems are operational
Maintenance
US IMAP email server downtime

On 22 July 2026 at 10:00 am US/Central time (UTC -5) one of our US IMAP email servers will be shut down for infrastructure maintenance. The server will be offline during the maintenance and the expected downtime is 6 hours.

Affected customers will be notified individually via email.

No incoming mail will be lost while the server is offline. Mail that arrives during the maintenance will be deferred and delivered once the mail server is back online.

We realize that the timing of this relocation is not ideal. If you have business-critical mailboxes and would like them to be available during the maintenance then please email support@opalstack.com or reply to this message to make arrangements to have your mailboxes migrated to a different IMAP server prior to the scheduled maintenance date.

If you have any questions or concerns regarding this maintenance then please email the Opalstack support team for assistance.

Past Incidents

20th January 2021

No incidents reported

19th January 2021

Email: USA US IMAP service performance degraded

The IMAP service on our US mail system is currently running very slowly. We're working to correct that at this time.

This is also causing timeouts and errors for users accessing Opalstack webmail, including users of our German mail system.

  • The US IMAP server is back online and is operating normally. We'll be upgrading the server in February to avoid future problems.

  • We've rebooted the US IMAP server and are monitoring.

    • 18th January 2021

    No incidents reported

    17th January 2021

    Web: San Francisco Opal3 not responding

    opal3.opalstack.com is currently not responding. We'll follow up here when more info is available.

  • The problem was caused by extremely high RAM usage from a process run by a hosting customer. We've notified the customer of the problem and have taken steps to prevent it from happening again.

  • Opal3 is stable after the reboot. We'll update this post when we've determined the cause of the outage.

  • Opal3 is back online after a reboot. The cause of the outage is still under investigation.

  • We're rebooting Opal3 at this time.

    • 16th January 2021

    No incidents reported

    15th January 2021

    No incidents reported

    14th January 2021

    No incidents reported