Pobox customers: Welcome! The Pobox service continues to run exactly as before, and no changes are required on your end. For more information on FastMail's acquisition of Pobox, please see the Pobox blog.
You can set up your FastMail account to sync with almost all desktop email/calendar clients and mobile apps. Follow the links below for detailed instructions on how to set up the most popular apps.
If you already know how to set up your app, our page of server names and ports has the details you need.
If you have an iPhone, iPad, iPod or Android device, we recommend the official FastMail app.
Please note that your battery life may be affected if your mobile device is set to fetch new data frequently. If you know your contacts or your calendar don't change very often, you may wish to configure these to an infrequent update, or even manual only.
If the app you want to use is not listed above, you'll have to check its documentation on how to set up an IMAP/CalDAV/CardDAV account. You may need the information on our server names and ports page if it can't discover the correct settings automatically. Unfortunately, we are unable to offer technical assistance with other clients; please contact the vendor directly.
When accessing your calendar from your device, you can't (yet!) automatically add incoming emailed invitations to your calendar, automatically update events if the organizer emails an update, or automatically update your own events when RSVPs are given. You'll need the FastMail web interface or FastMail app to perform these updates.
See the client troubleshooting guide if you're having problems syncing.