Interrupted access to Fastmail services

Affected

Web client and mobile app

Mail delivery

Mail access (IMAP/POP)

Calendar (CalDAV)

File storage (WebDAV)

ResolvedAugust 15, 2025 at 10:27 PMUTC
Access to Fastmail services should be restored for affected users. No mail has been lost, and we do not expect further issues.
UpdateAugust 15, 2025 at 8:52 PMUTC
We believe that switching to an alternate network path for inbound traffic has resolved this issue. We are still monitoring the situation to ensure that there are no further service interruptions.
MonitoringAugust 15, 2025 at 4:59 PMUTC
We have switched to an alternate network path for inbound traffic. This should resolve the issue that some users were experiencing accessing Fastmail services. No mail has been lost. We are continuing to monitor the situation.
InvestigatingAugust 15, 2025 at 4:00 PMUTC
Some users are still unable to access the Fastmail web UI. We believe this is related to a networking issue as it is only impacting a subset of users. Our team is continuing to investigate this.
MonitoringAugust 15, 2025 at 3:30 PMUTC
We believe that the issue preventing some users from accessing the Fastmail web UI should now be resolved. No mail has been lost. We are continuing to monitor.
InvestigatingAugust 15, 2025 at 3:00 PMUTC
Some users are experiencing interrupted access to Fastmail services. We're looking into this.

Fastmail - Interrupted access to Fastmail services – Incident details