Pagkugi

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Sterna Mail and Pagkugi

Android client with JMAP and IMAP/SMTP.

At a glance

JMAP, IMAP/SMTP, PGP/S/MIME, Sieve, vacation, offline use, and push without Google services.

Where Pagkugi differs. Mobile-only and cache-based, where Pagkugi is a desktop Maildir client.

Status
Active
License
GPL-3.0
Platforms
Android
Storage
A local offline cache; the server remains the source of truth.
Website
https://sternamail.org/
Source
https://codeberg.org/emon/sterna-mail

Where Sterna Mail is better

  • JMAP and IMAP/SMTP on Android.
  • PGP and S/MIME, Sieve, and a vacation responder.
  • Push notifications without Google services, and reproducible F-Droid builds.

Storage and ownership

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

Feature Pagkugi Sterna Mail
Open local storage Yes No
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 Sterna Mail
IMAP and SMTP Yes Yes
POP3 No Not in the first release. No
Gmail account No Provider-specific account model is not supported. Yes
Microsoft / Exchange No Exchange-specific account model is not supported. Yes
JMAP No Yes

Reading

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

Feature Pagkugi Sterna Mail
In-app HTML rendering No Mail is converted to text instead. Yes
HTML converted to text Yes Yes
Conversation threading Yes Yes
Calendar invitations Limited A focused read-only viewer, not a calendar application. Yes

Writing and organizing

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

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

Security and privacy

Encryption, sender checks, and what leaves the machine.

Feature Pagkugi Sterna Mail
PGP / S/MIME No Not built in. Yes
Phishing or sender checks Yes Limited
Remote content blocked Yes Yes
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 Sterna Mail
Graphical desktop app Yes No
Terminal interface No No
Mobile app No Yes
Web or self-hosted No No
Calendar, contacts, or groupware No Limited Calendar invites.
Plugin or extension system No No
Open source No Proprietary commercial software. Yes
No account with its maker Yes Yes

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