Thunderbird

What you can use it for

Read email, organise messages and manage calendars from your desktop.

• Full-featured open-source desktop communication hub with email, calendar, and address book.
• Zero tracking, local privacy, PGP/OpenPGP end-to-end encryption support.
• Vast add-on ecosystem for customization and keyboard navigation.

Before you switch

Interface is more traditional than minimalist speed-focused clients like Superhuman.

Alternatives to these paid apps

Each comparison covers the workflow described above, rather than every paid feature.

Superhuman→Website ↗