All systems are operational
Maintenance
Scheduled US IMAP email server downtime

On 26 August 2026 at between 11:00 am and 4:00 pm US/Pacific time our network team will be performing infrastructure maintenance. During this 5-hour window, network connectivity to one of our US IMAP/POP3 email servers will be interrupted for up to 1 hour.

As a result, some customer mailboxes will be unavailable for up to 1 hour during the network interruption. Customers who will be impacted by the interruption have been emailed directly.

No incoming mail will be lost during the interruption. Mail that arrives during the interruption will be deferred and delivered once connectivity to the mail server is restored.

Email forwarding and SMTP services will not be affected, however messages sent via SMTP during the interruption will not be stored as sent mail in IMAP folders on the server.

We'll update our status page at http://status.opalstack.com/ at the beginning of the maintenance window. To be informed of system status updates automatically please subscribe at https://status.opalstack.com/subscribe.

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

Past Incidents

3rd October 2024

No incidents reported

2nd October 2024

No incidents reported

1st October 2024

Email: USA US SMTP blocked by Microsoft

At this time messages sent from the US SMTP server to Microsoft email domains like hotmail.com, live.com, outlook.com, and their international variants are being blocked by Microsoft.

The cause of the block has been identified and corrected and we are now waiting for Microsoft to remove the block.

We'll update this post as soon as the block has been lifted or when there is other information to report.

  • Microsoft has lifted the block and their servers are now accepting mail from the US SMTP.

  • 30th September 2024

    No incidents reported

    29th September 2024

    Email: Germany DE mail SSL certificates were briefly expired

    Due to an unfortunate oversight on our end the SSL certificates for our DE mail servers expired earlier today at around 09:30 UTC, causing certificate warnings to appear in email client software using DE mailboxes and in our DE webmail system.

    Renewed certificates were rolled out approximately 1 hour later and there have been no issues since that time (~10:30 UTC). If you continue to see a certificate warning when accessing DE email systems then please restart your software and/or your device.

    28th September 2024

    No incidents reported

    27th September 2024

    No incidents reported