Fastmail - Notice history

All systems operational

General Availability - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Web client and mobile app - Operational

100.0% uptime
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Login & sessions - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Mail delivery - Operational

99.96% uptime
Nov 2025 · 100.0%Dec · 99.89%Jan 2026 · 100.0%

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Mail access (IMAP/POP) - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Calendar (CalDAV) - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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File storage (WebDAV) - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Contacts (CardDAV) - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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Support Tickets - Operational

100.0% uptime
Nov 2025 · 100.0%Dec · 100.0%Jan 2026 · 100.0%

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www.fastmail.com - Operational

99.95% uptime
Nov 2025 · 99.86%Dec · 100.0%Jan 2026 · 100.0%

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Notice history

View current status

Jan 2026

Microsoft update misclassifying Fastmail emails to Outlook addresses
ResolvedDegraded performance816 hours 53 minutes
  • ResolvedUTC

    The deliverability issues to Outlook-hosted email addresses are now resolved.

  • MonitoringUTC

    The deliverability issues affecting emails sent to Outlook-hosted addresses have stabilized. We are continuing to monitor.

  • IdentifiedUTC

    We’ve noticed that a small percentage of emails sent to Outlook-hosted addresses are being affected again. We’re in touch with Microsoft and working with them to resolve it.

  • MonitoringUTC

    Microsoft has addressed this issue and we believe the is now resolved. We continue to monitor.

  • IdentifiedUTC

    A recent Microsoft update is sometimes incorrectly flagging some emails from several providers, including Fastmail. This is causing intermittent delivery issues for some email sent to addresses hosted on outlook.com. We are seeing a small percentage of outgoing mail affected, with no obvious reason as to why. Our team is actively working with Microsoft's email team to get this resolved as soon as possible.

Interrupted access to Fastmail services
ResolvedDegraded performance1 hour 44 minutes
  • ResolvedUTC

    This incident has been resolved. No mail has been lost as a result of this incident.

  • MonitoringUTC

    We've implemented a fix and are currently monitoring the result.

  • UpdateUTC

    We are continuing to investigate this incident.

  • InvestigatingUTC

    Some users are reporting issues accessing Fastmail. We are currently investigating this incident.

Internet routing issues affecting Australian Fastmail users
ResolvedDegraded performance5 hours 38 minutes
  • ResolvedUTC
    This incident has been resolved.
  • UpdateUTC

    We are continuing to monitor the result.

  • MonitoringUTC

    Our network engineers have put in place a workaround that should allow all users to connect to Fastmail services again. We are continuing to work on the underlying problem, but we expect no further user impact at this time.

  • UpdateUTC

    Our network engineers have determined that there is no issue with Fastmail services or with our contracted connectivity providers. The problem may be with a part of the internet backbone or with a specific NBN ISP. We are reaching out to third-party support contacts and continuing to monitor the situation.

  • IdentifiedUTC

    We have received reports that users in several Australian locations are unable to connect to Fastmail via NBN. We have been able to reproduce the issue and are investigating the problem. It appears to be an internet routing issue and Fastmail systems and user data are not affected. If you are affected by the issue, you may be able to access Fastmail via an alternative internet connection e.g. mobile phone data. We will continue to investigate the problem and work on full restoration of access

JAN19
Planned network maintenance
CompletedMaintenance13 minutes
  • CompletedJanuary 19, 2026 at 10:13 AMUTC
    Maintenance has completed successfully.
  • In progressJanuary 19, 2026 at 10:00 AMUTC
    Maintenance is now in progress
  • PlannedJanuary 19, 2026 at 10:00 AMUTC

    Starting at 5:00 AM EST (10:00 AM UTC) on Monday, January 19, we'll be performing network maintenance. We expect to complete this work without any service interruption. In the unlikely event that issues arise, there may be a brief downtime of up to five minutes, during which Fastmail services will be temporarily unavailable.

Access to Fastmail services impacted
ResolvedMajor outage52 minutes
  • ResolvedUTC
    This incident has been resolved.
  • MonitoringUTC

    Access to our services is no longer impacted. We are continuing to monitor.

  • InvestigatingUTC

    Access to Fastmail services has impacted all customers. We're looking into it.

Dec 2025

Some customers are unable to send messages
ResolvedPartial outage1 hour 15 minutes
  • ResolvedUTC

    This incident has been resolved. No mail has been lost, and we don't anticipate further issues.

  • MonitoringUTC

    Email sending has resumed for affected users. We are actively monitoring this service for any further issues.

  • InvestigatingUTC

    There is an internal forwarding issue affecting email sending. We are currently investigating.

Nov 2025

Interrupted access to Fastmail services due to Cloudflare outage
ResolvedPartial outage3 hours 23 minutes
  • ResolvedUTC

    Cloudflare has reported that this incident has been resolved.

  • IdentifiedUTC

    An outage at Cloudflare, our external web hosting provider, is preventing some users from accessing www.fastmail.com. Users should still be able to access webmail by going to app.fastmail.com directly. Cloudflare hosts a large fraction of web content, so users may also see images or external links failing to load in emails.

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