Fastmail is an independent email and productivity service offering fast, private hosting for individuals and businesses. Its products include email, calendars, and contacts, available through native apps for multiple platforms and usable offline. Customers can host email on their own domain, use aliases and Masked Email to protect their primary address, and organize messages with powerful search, pinned mail, snoozing, scheduled send, and private notes. Calendar features include event updates and the option to bring Google or iCloud calendars together in one place.

Fastmail is a paid service that says it does not show ads, mine personal data, or share customer information with third parties. It emphasizes security, backups, privacy, and personal support available 24/7. People and businesses can try the service free for 30 days, with no obligation or credit card required. Fastmail also provides tools to move mail, calendars, and contacts from services including Gmail, Outlook, Yahoo, Proton, and HEY.