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.
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 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.