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CLUSTER CLIENT-EMAIL-MANAGES · 37 ENTRIES · EARLIEST ENTRY 2010-05-08

Email clients with PIM features

This cluster comprises desktop and mobile email clients that often integrate calendar, contacts, and news feeds, ranging from simple Gmail clients to full personal information managers. Dated entries span from May 2010 to July 2026 but are sparse, with the majority of dated entries appearing after 2020 and a slight grouping in 2023 and mid-2026. Traction leaders among members are thunderbird-esr140-bin, WEB.DE - Mail, Cloud & News, and Thunderbird, though all report zero stars.

Entry timeline

ENTRY TIMELINE

MAY 2010: 1APR 2016: 1JAN 2017: 1MAY 2020: 1APR 2021: 1MAR 2022: 1NOV 2023: 1SEP 2024: 2OCT 2025: 1DEC 2025: 1MAR 2026: 1MAY 2026: 2JUL 2026: 3AUG 2026: 7SEP 2026: 12OCT 2026: 1
MAY 2010OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 4 hand-coded · 16 unlabelled

Operator · 3 hobby · 2 indie · 3 commercial · 10 open source · 2 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01czlmail2★23 days—hobbyNative desktop client for Stalwart email servers that manages mail, calendar, contacts and files with notifications and a built-in AI assistant.
  2. 02fabric-inbox1★9 dayslivecommercialDesktop email client that triages Gmail and Cloudflare mailboxes, automates replies with agents, and manages domains.
  3. 03Trudaybook1★12 days—Desktop app that combines email and calendar on one day timeline, placing messages and meetings by time and collecting unfinished items in an inbox-zero list.
  4. 04fastmail0★14 daysliveopen sourceDesktop client for managing email, calendar, and contacts within one application.
  5. 05yunzheng-apps0★14 daysliveindieSuite of desktop and mobile apps that provide email, video meetings, and SIP phone calling under a single sign-in.
  6. 06mailbox-bin0★13 daysliveopen sourceDesktop email client with ribbon interface, calendar preview, and reading pane supporting POP3, IMAP, SMTP.
  7. 07penguin-mail0★3 daysliveopen sourceDesktop email and calendar client for Linux that manages Gmail and IMAP accounts, contacts, and provides OpenPGP and S/MIME encryption.
  8. 08flectar-mail0★17 daysliveopen sourceNative client that manages email, calendars, and contacts in one application.
  9. 09forwardbin0★24 dayslivehobbyDesktop app that acts as a drop bin, schedules calendar slots with AI, and sends email notifications on Linux and macOS.
  10. 10isobar0★19 days—hobbyLocal assistant that merges email, calendar, and tasks into one schedule and prices commitments using optimization over possible futures.
  11. 11QuickMail0★21 daysliveDesktop email client for Windows that manages multiple accounts, calendars, contacts, and large archives with local-first storage and keyboard-driven search.
  12. 12thunderbird-esr140-bin0★10 dayslivehand-codedopen sourceDesktop email and news client.
  13. 13Thunderbird0★19 dayslivehand-codedopen sourceEmail client that manages mail, news, chat, and calendar in one application.
  14. 14mektu-bin0★1 moliveopen sourceAI-powered desktop client that unifies email, tasks, and calendar management into a single application.
  15. 15thunderbird-nightly-bin0★15 dayslivehand-codedopen sourceDesktop email and news client offering nightly builds of the latest features for managing messages and newsgroups.
  16. 16Fastmail0★1 moliveopen sourceAn email client offering offline access, powerful search, inbox organization tools, and synced calendars and contacts for personal or team communication.
  17. 17Boogie Mail0★1 molivecommercialEmail, calendar, and contacts app that natively supports JMAP servers and provides multi-account sync and real-time updates.
  18. 18runsdark0★1 mo—indieWeb platform for Filipino executive assistants supporting global clients that combines task management, AI email drafting, calendar tracking, and travel planning in one workspace.
  19. 19Convey0★1 molivehand-codedopen sourceEmail client for GNOME that organizes messages into conversations and supports search and composing.
  20. 20OfficeMail Pro0★2 molivecommercialBusiness email client using ActiveSync for Exchange, Office365, and Google Workspace with push sync, calendar, and contacts.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.