CLUSTER EMAIL-CLIENT-DESKTOP · 25 ENTRIES · EARLIEST ENTRY 2026-08-12

Desktop email client apps

This cluster comprises desktop and mobile email clients, many emphasizing offline functionality, multi-account aggregation, local-first storage, and integration with Exchange/Office 365 or legacy webmail wrappers. Dated entries before the index start show a sparse annual release from 2015 through 2025, then a denser series of seven entries in the first seven months of 2026. On traction, 'mail' leads decisively with 216 stars, far ahead of 'tinymails' (3 stars) and 'kingmail' (1 star).

Entry timeline

ENTRY TIMELINE

NOV 2014: 1MAR 2015: 1OCT 2019: 1JAN 2026: 1JUN 2026: 1JUL 2026: 1AUG 2026: 6SEP 2026: 9OCT 2026: 4
NOV 2014OCT 2026

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 4 unlabelled

Operator · 1 hobby · 2 indie · 2 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 5 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 21emails0★1 mo—Offline-first desktop email client that syncs via IMAP and stores data locally.
  2. 22Simson Desk0★unknownliveindieDesktop email, calendar, and task client that connects to Microsoft 365 and IMAP mailboxes with offline local storage.
  3. 23project-eml-file-management-system0★3 mo—ai-builthobbyOffline desktop app that automatically organizes email files into subject folders and indexes them in a searchable local database for easy retrieval and export.
  4. 24Melia0★unknownliveindieDesktop email client that connects directly to IMAP and SMTP accounts with local-only storage, offline search, and privacy-focused inbox protections.
  5. 25Penguin Mail0★unknownliveLinux desktop client that combines email and calendar, connecting Gmail, Outlook, IMAP and CalDAV accounts into one searchable offline mailbox.