We can confirm that Fastmail connectivity issues have been resolved for both the WebUI and the Mobile Apps. All users should now be able now access our services. Network instability caused issues during a large-scale maintenance operation. Email delivery was not impacted and no mail was lost during this outage.

For most users we believe that this should now be resolved and access should now be restored to both the WebUI and our Mobile Apps. We’re continuing to monitor and will provide an additional update once we've confirmed that this is resolved.

We are currently experiencing issues with our web interface and mobile app. However access to your mail should still be available using a third-party mail client or Beta at Beta.Fastmail.com. We will continue to provide further updates to you.