Fastmail is an independent email and productivity service offering fast, private email hosting for individuals and businesses. Its products bring mail, calendars, and contacts together, with native apps for different platforms and offline access to read, draft, search, and manage information. Users can host email on their own domain, create aliases and Masked Email addresses, and use tools to migrate mail, calendars, and contacts from services including Gmail, Outlook, Yahoo, Proton, and HEY.

Fastmail’s features are designed to make everyday communication easier, including powerful search, message pinning and snoozing, scheduled sending, VIP notifications, calendar sharing and updates, and private notes on messages. The company says its paid service does not use advertising, mine personal data, or share it with third parties. It emphasizes security, data privacy, portability, and personal support, with its support team available 24/7. Fastmail also contributes to open email and calendar standards, including the development of JMAP, and provides resources such as a help center, blog, podcast, and API documentation.