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Software · Internet & communication

klient

Mail client for GNOME: Proton Mail, Gmail, Seznam and IMAP with PGP, an AI assistant, an AI spam filter and local AI (Go, GTK4). In English and Czech.

  • Completely free
  • Linux
  • Open source
  • No account

Overview

klient is an email client, available on Linux. Other documented uses: AI chat.

Features described in its GitHub repository: local model execution, end-to-end encryption and two-factor authentication.

Services and protocols mentioned: IMAP and SMTP.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Mail client for GNOME: Proton Mail, Gmail, Seznam and IMAP with PGP, an AI assistant, an AI spam filter and local AI (Go, GTK4).” — GitHub, 10 November 2026
  • “Mail client for GNOME: Proton Mail, Gmail, Seznam and IMAP with PGP, an AI assistant, an AI spam filter and local AI (Go, GTK4).” — GitHub, 10 November 2026
  • “Mail client for GNOME: Proton Mail, Gmail, Seznam and IMAP with PGP, an AI assistant, an AI spam filter and local AI (Go, GTK4).” — GitHub, 10 November 2026
  • “The interface is available in English and Czech. • Proton Mail natively – straight over the Proton API (SRP login, two-factor authentication, two-password mode). • Gmail, Seznam.cz and any IMAP/SMTP mailbox – the…” — GitHub, 10 November 2026
  • “The interface is available in English and Czech. • Proton Mail natively – straight over the Proton API (SRP login, two-factor authentication, two-password mode). • Gmail, Seznam.cz and any IMAP/SMTP mailbox – the…” — GitHub, 10 November 2026

At a glance

klient is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • No account needed
  • Commercial use allowed

Sources and checks

  • Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) —
  • Last technical check: 7 November 2026
  • Description from github.com — Dépôt GitHub Imbecile6197/klient (GPL-3.0-only)

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