Fastmail Outage History

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Fastmail had 11 outages in the last 2 years — averaging 0.5 incidents per month.

There were 11 Fastmail outages since September 17, 2025. Each is summarised below — incident details, duration, and resolution information.

Source: https://www.fastmailstatus.com

Minor September 4, 2026

Interrupted access to Fastmail services

Detected by Pingoru
Sep 04, 2026, 04:41 PM UTC
Resolved
Sep 04, 2026, 04:41 PM UTC
Duration
Timeline · 1 update
  1. resolved Sep 04, 2026, 04:41 PM UTC

    Type: Incident Duration: 1 hour and 8 minutes Affected Components: Contacts (CardDAV), Mail access (IMAP/POP), File storage (WebDAV), Calendar (CalDAV), Web client and mobile app Sep 4, 17:16:00 GMT+0 - Monitoring - We believe that we have resolved the issue that was preventing some users from accessing Fastmail services. We are continuing to monitor. No mail has been lost. Sep 4, 17:49:00 GMT+0 - Resolved - A server error occurred that temporarily prevented some users from accessing Fastmail services. We have resolved the issue. No mail has been lost. Sep 4, 16:41:00 GMT+0 - Investigating - Some users are experiencing interrupted access to Fastmail services. We're looking into this.

Read the full incident report →

Minor May 27, 2026

Intermittent outbound delivery issues

Detected by Pingoru
May 27, 2026, 10:24 PM UTC
Resolved
May 27, 2026, 10:24 PM UTC
Duration
Timeline · 1 update
  1. resolved May 27, 2026, 10:24 PM UTC

    Type: Incident Affected Components: Mail delivery May 27, 22:24:00 GMT+0 - Investigating - We're investigating reports of outbound mail issues. Some users have been experiencing deferrals or bounce backs on outbound messages. May 28, 01:00:00 GMT+0 - Resolved - We identified a problem which caused intermittent outbound issues leading to some users experiencing deferrals or bounce backs. We have remediated the problem. No mail has been lost.

Read the full incident report →

Minor March 26, 2026

Interrupted access to Fastmail web and app services

Detected by Pingoru
Mar 26, 2026, 04:45 PM UTC
Resolved
Mar 26, 2026, 04:45 PM UTC
Duration
Timeline · 1 update
  1. resolved Mar 26, 2026, 04:45 PM UTC

    Type: Incident Duration: 2 hours and 19 minutes Affected Components: Web client and mobile app Mar 26, 16:45:00 GMT+0 - Investigating - Some customers are experiencing interrupted access to Fastmail services. We're looking into it. Mar 26, 18:13:00 GMT+0 - Monitoring - We have implemented a fix for the issue and are currently monitoring the result. No mail has been lost. Mar 26, 19:04:28 GMT+0 - Resolved - This incident has been resolved, and we do not anticipate any further issues. No mail has been lost.

Read the full incident report →

Minor January 16, 2026

Access to Fastmail services impacted

Detected by Pingoru
Jan 16, 2026, 09:30 PM UTC
Resolved
Jan 16, 2026, 09:30 PM UTC
Duration
Timeline · 1 update
  1. resolved Jan 16, 2026, 09:30 PM UTC

    Type: Incident Duration: 53 minutes Jan 16, 22:22:44 GMT+0 - Resolved - This incident has been resolved. Jan 16, 21:30:00 GMT+0 - Investigating - Access to Fastmail services has impacted all customers. We're looking into it. Jan 16, 21:45:00 GMT+0 - Monitoring - Access to our services is no longer impacted. We are continuing to monitor.

Read the full incident report →

Minor January 9, 2026

Interrupted access to Fastmail Services

Detected by Pingoru
Jan 09, 2026, 09:41 PM UTC
Resolved
Jan 09, 2026, 09:41 PM UTC
Duration
Timeline · 1 update
  1. resolved Jan 09, 2026, 09:41 PM UTC

    Type: Incident Duration: 6 minutes Affected Components: Mail access (IMAP/POP), Web client and mobile app Jan 9, 21:41:15 GMT+0 - Investigating - Some customers are experiencing interrupted access to Fastmail services. We're looking into it. Jan 9, 21:47:00 GMT+0 - Resolved - This incident has been resolved. No mail has been lost as a result of this incident, although delivery of some mail was delayed.

Read the full incident report →

Minor December 3, 2025

Some customers are unable to send messages

Detected by Pingoru
Dec 03, 2025, 02:59 AM UTC
Resolved
Dec 03, 2025, 02:59 AM UTC
Duration
Timeline · 1 update
  1. resolved Dec 03, 2025, 02:59 AM UTC

    Type: Incident Duration: 1 hour and 16 minutes Affected Components: Mail delivery Dec 3, 02:59:00 GMT+0 - Investigating - There is an internal forwarding issue affecting email sending. We are currently investigating. Dec 3, 03:49:30 GMT+0 - Monitoring - Email sending has resumed for affected users. We are actively monitoring this service for any further issues. Dec 3, 04:14:35 GMT+0 - Resolved - This incident has been resolved. No mail has been lost, and we don't anticipate further issues.

Read the full incident report →

Major November 18, 2025

Interrupted access to Fastmail services due to Cloudflare outage

Detected by Pingoru
Nov 18, 2025, 12:30 PM UTC
Resolved
Nov 18, 2025, 12:30 PM UTC
Duration
Timeline · 1 update
  1. resolved Nov 18, 2025, 12:30 PM UTC

    Type: Incident Duration: 3 hours and 23 minutes Affected Components: www.fastmail.com Nov 18, 12:30:00 GMT+0 - Identified - 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](http://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. Nov 18, 15:53:08 GMT+0 - Resolved - Cloudflare has reported that this incident has been resolved.

Read the full incident report →

Minor October 28, 2025

Some users are experiencing delayed mail delivery.

Detected by Pingoru
Oct 28, 2025, 01:03 PM UTC
Resolved
Oct 28, 2025, 01:03 PM UTC
Duration
Timeline · 1 update
  1. resolved Oct 28, 2025, 01:03 PM UTC

    Type: Incident Duration: 1 day and 16 hours Affected Components: Mail delivery Oct 28, 13:03:00 GMT+0 - Investigating - Some users are experiencing delayed mail delivery. We’re looking into the issue. Oct 28, 13:43:00 GMT+0 - Resolved - This incident has been resolved. No mail has been lost as a result of this incident, although delivery of some mail was delayed.

Read the full incident report →

Minor September 17, 2025

Some users are experiencing delayed mail delivery

Detected by Pingoru
Sep 17, 2025, 01:47 PM UTC
Resolved
Sep 17, 2025, 01:47 PM UTC
Duration
Timeline · 1 update
  1. resolved Sep 17, 2025, 01:47 PM UTC

    Type: Incident Duration: 2 hours and 33 minutes Affected Components: Mail delivery Sep 17, 13:47:00 GMT+0 - Investigating - Some users are experiencing delayed mail delivery. We're looking into it. Sep 17, 14:50:48 GMT+0 - Investigating - Some users are still experiencing issues with delayed mail. We're continuing to look into this. Sep 17, 15:41:55 GMT+0 - Monitoring - We have resolved the issue that was causing delayed mail delivery. No mail has been lost. We're continuing to monitor. Sep 17, 16:19:49 GMT+0 - Resolved - The issue that was causing mail to be delayed has been resolved. No mail has been lost.

Read the full incident report →