Lookout

Linux

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Freedom report

Two barsScore 6.9

Free tierA free tier is on its own pricing page
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Lookout is ranked #49 of 143 in email clients on Freedom251. It runs on Linux. There is a free plan.

Lookout plans and pricing

All plans

Lookout Free Free and open source · GPL-3.0-or-later lookout-mail.com · 12 Oct 2026

Compared on email clients

Free plan: Yes
App coverage: desktop
Offline access: Yes
Calendar tools: Yes

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The record

Product: Lookout is a native GNOME email client that combines mail, calendar, contacts and tasks in one app.
Mail protocols: It uses IMAP and SMTP for mail, CalDAV for calendars and tasks, and CardDAV for contacts.
Account connections: Accounts can be added through GNOME Online Accounts or configured directly with IMAP and SMTP settings.
Integrations: The maker lists Google, Microsoft 365 and Nextcloud support through GNOME Online Accounts, plus Google Tasks.
Mail features: The app supports multi-account IMAP sync, conversation threads, full-text search, snooze, follow-up tasks, tags and message actions.
Calendar features: Its CalDAV calendar offers month, week, day, agenda and split views, recurring-event editing, invitations, webcal subscriptions and .ics imports.
Offline use: Mail, calendar and contacts are cached locally in SQLite and remain readable offline.
Privacy: Messages render in a sandboxed WebKit view, remote images are blocked by default, and the maker says data is sent only to users’ own servers.
Credential storage: For manually configured servers, passwords are stored in the GNOME keyring and fetched when needed; the maker says they do not touch disk.
Linux packages: The maker offers Flatpak, Snap, .deb and .rpm packages and instructions to build from source.
Desktop requirement: Lookout is built for a GNOME session; other GTK desktops can run it if GNOME Online Accounts and the keyring services are available.
License: Lookout is described as an independent, free and open-source GPL-3.0-or-later reimplementation of the Outlook desktop experience, with no Microsoft code or Exchange dependency.
Price from: Free

Where it ranks on Freedom251

Best Email Clients in 2026#49 of 143

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Sources

lookout-mail.com· checked 12 Oct 2026