Fastmail experienced a minor incident on August 15, 2025, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- resolved Aug 15, 2025, 03:00 PM UTC
Type: Incident Duration: 7 hours and 28 minutes Affected Components: www.fastmail.com, Mail delivery, Support Tickets, Mail access (IMAP/POP), File storage (WebDAV), Contacts (CardDAV), Web client and mobile app, Login & sessions, Calendar (CalDAV), General Availability Aug 15, 15:30:00 GMT+0 - Monitoring - 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. Aug 15, 15:00:00 GMT+0 - Investigating - Some users are experiencing interrupted access to Fastmail services. We're looking into this. Aug 15, 16:00:00 GMT+0 - Investigating - 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. Aug 15, 16:59:00 GMT+0 - Monitoring - 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. Aug 15, 20:52:58 GMT+0 - Monitoring - 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. Aug 15, 22:27:58 GMT+0 - Resolved - Access to Fastmail services should be restored for affected users. No mail has been lost, and we do not expect further issues.