Fastmail
Fastmail is a macOS email and calendar app for managing mail, contacts, and schedules with offline access and account sync.
What is Fastmail?
Fastmail is a productivity app for macOS focused on email, calendars, and contacts. It helps individuals and teams manage everyday communication from a dedicated desktop app instead of working only in a browser. The app supports reading and writing email, organizing inboxes, searching messages, and keeping calendars and contacts in sync with a Fastmail account. It also supports offline work, so you can review messages, draft replies, and manage schedule information when you are temporarily disconnected. Fastmail Pty Ltd offers the service across desktop, mobile, and web, which makes it useful for people who want the same account and workflow available on multiple devices. On Mac, it fits users who want a focused mail workspace with notifications and desktop app convenience.
Key features
- Read, write, and organize email in a dedicated desktop app
- Use calendars and contacts alongside your inbox
- Search messages quickly, including while managing large mailboxes
- Work offline and sync changes when you reconnect
- Set up rules, snooze messages, mute threads, and unsubscribe from mailings
- Receive notifications and use the app as part of a regular desktop workflow
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Safety overview
Status: Mostly safe
Fastmail is legitimate email software, and normal use involves access to the mail, contacts, and calendar information stored in your Fastmail account. Notifications, background syncing, and offline storage are expected for this kind of app. Because it handles sensitive communication data, use a strong account password, enable two-factor authentication if available, and sign out if you no longer use the app on a shared Mac.
Recommendation: Keep Fastmail if you use a Fastmail account for email, calendar, or contacts on this Mac. Remove it if you no longer use the service or prefer the web version, understanding that deleting the app can also remove its local offline data and desktop-specific convenience features until you reinstall it.
Common paths
/Applications/Fastmail.app~/Applications/Fastmail.app
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