Pagkugi

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Sylpheed and Pagkugi

Lightweight GTK graphical mail client for Unix-like systems and Windows.

At a glance

Powerful filtering and search, folders, junk control, attachments, external commands, and optional GnuPG with SSL/TLS.

Where Pagkugi differs. Shares Pagkugi's local-storage and text-era roots, but it is an older GTK client with a broader, older feature set whose development has been quiet since the early 2020s.

Status
Maintained, quiet
License
GPL-2.0-or-later
Platforms
Windows, macOS, Linux, BSD
Storage
One-message-per-file storage in its own layout; not Maildir.
Website
https://sylpheed.sraoss.jp/en/

Where Sylpheed is better

  • Powerful filtering and search in a lightweight desktop client.
  • External-command integration and GnuPG support.
  • Runs on more legacy desktop platforms.

Storage and ownership

Where the mail actually lives, and whether it survives the client.

Feature Pagkugi Sylpheed
Open local storage Yes Yes One message per file in its own layout.
Maildir as the live store Yes No
Works offline Yes Yes

Accounts and protocols

The servers and providers the client can talk to.

Feature Pagkugi Sylpheed
IMAP and SMTP Yes Yes
POP3 No Not in the first release. Yes
Gmail account No Provider-specific account model is not supported. Limited Generic IMAP only.
Microsoft / Exchange No Exchange-specific account model is not supported. Limited Generic IMAP only.
JMAP No No

Reading

How a message is presented, and what happens to HTML.

Feature Pagkugi Sylpheed
In-app HTML rendering No Mail is converted to text instead. Limited An internal parser, with no browser engine.
HTML converted to text Yes Yes
Conversation threading Yes Yes
Calendar invitations Limited A focused read-only viewer, not a calendar application. No

Writing and organizing

Composition, search, and the tools that shape a mailbox.

Feature Pagkugi Sylpheed
Rich or HTML composition No Composes text/plain; Markdown composition is not released. No It cannot compose HTML.
Snooze or send later No No
Full-text search Yes Yes
Custom incoming filters No The local filter engine is implemented but switched off. Yes
Tags or labels No Read state only; no general labels or tags. Limited
Mailing-list actions Yes Limited
Command palette or keyboard-first No Actions live in explicit context menus. Limited Keyboard shortcuts, not a command palette.
Open-thread work view Yes No

Security and privacy

Encryption, sender checks, and what leaves the machine.

Feature Pagkugi Sylpheed
PGP / S/MIME No Not built in. Yes GnuPG integration.
Phishing or sender checks Yes Limited
Remote content blocked Yes Limited
Built-in AI features No No assistant, by design. No

Platform and business

Where it runs, how it extends, and how it is sold.

Feature Pagkugi Sylpheed
Graphical desktop app Yes Yes
Terminal interface No No
Mobile app No No
Web or self-hosted No No
Calendar, contacts, or groupware No No
Plugin or extension system No Yes
Open source No Proprietary commercial software. Yes
No account with its maker Yes Yes

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