Fastmail is an independent email and productivity service offering fast, private hosting for individuals and businesses. Its core products bring email, calendars, and contacts together, with apps for multiple devices and support for working offline. Features include powerful search, pinned messages, snoozing, scheduled sending, aliases, and Masked Email to help users organize communications and protect their real email addresses. The calendar supports event updates and can display Google or iCloud calendars alongside other events.

Fastmail is a paid service that says it does not run ads, mine customer data, or share personal information with third parties. It emphasizes email security, backups, data privacy, and the ability to leave without being locked in. Customers can choose EU or US data residency and receive personal support 24/7. Fastmail also offers tools and guidance for moving from services such as Gmail, Outlook, Yahoo, Proton, and HEY, as well as email hosting for custom domains. The company contributes to open email standards, including JMAP, and provides documentation, migration resources, and a free 30-day trial.