Sealpost 1.13.1

A small update for Sealpost 1.13.0. There are no new installers. Sealpost on Windows, macOS and Linux updates itself to 1.13.1:

• From 1.12.0 or 1.13.0: Settings → About & updates → Check for updates.
• From 1.11.0 or older, or without the button: download Sealpost-1.13.1.sealpost below, then Settings → About & updates → Install update file…
• New install: use the 1.13.0 installers, then check for updates.

File	For
Sealpost-1.13.1.sealpost	Update file for an existing install (all systems)
Sealpost-source-1.13.1.zip	Source code (the same as the v1.13.1 tag)

New in Sealpost 1.13.1

• Folder icons: right-click any folder → Choose icon… and pick one of about 85 icons. A pinned folder can show its own icon instead of 📌; Use default icon puts the usual one back.
• A renamed or moved folder keeps its icon (and its pin); a deleted folder's icon goes with it.
• Icons sync with your other devices and with Sealpost Web (server 1.11.1 or newer).

Earlier versions: see the version history in sealpost/README.md.

Sealpost 1.13.0

Sealpost is an email client with OpenPGP built in (sign, encrypt, decrypt, verify, key management) for Windows, macOS and Linux. It works with the email account you already have. Sealpost Server is a small PHP package for your own website: it adds Sealpost Web, webmail for that same account, kept in sync with the desktop app, which can be added to an iPhone or Android home screen. Sealpost Server is not an email server — your mail stays with your email provider.

Downloads

File	For
Sealpost-Setup-1.13.0.exe	Windows 10/11 installer
Sealpost-1.13.0-arm64.dmg	macOS 13 Ventura or newer, Apple Silicon (M1/M2/M3/M4…)
Sealpost-1.13.0-x64.dmg	macOS 13 Ventura or newer, Intel
Sealpost-1.13.0-macOS12-arm64.dmg	macOS 12 Monterey, Apple Silicon
Sealpost-1.13.0-macOS12-x64.dmg	macOS 12 Monterey, Intel
Sealpost-1.13.0-amd64.deb	Ubuntu, Debian, Mint: sudo apt install ./Sealpost-1.13.0-amd64.deb
Sealpost-1.13.0-x86_64.AppImage	Any Linux (64-bit): chmod +x it, then run it
Sealpost-1.13.0.sealpost	Update file for an existing install: Settings → About & updates → Install update file…
Sealpost-Web-Server-1.11.0.zip	Sealpost Server + Sealpost Web for your website (PHP 8 + SQLite)
Sealpost-source-1.13.0.zip	Source code (the same as the v1.13.0 tag)

The Mac and Linux files are added by GitHub's build machines a few minutes after this release appears.

Windows: the installer isn't code-signed, so SmartScreen shows "Windows protected your PC". Click More info → Run anyway.

Mac: the app isn't notarized. The first time, open System Settings → Privacy & Security and click Open Anyway (macOS 12: right-click Sealpost in Applications → Open).

Linux: passwords are kept in your login keyring (GNOME Keyring / KDE Wallet).

Server, new install: upload the contents of sealpost-server/, copy config.example.php to config.php and set your own setup_code, then open status.php. Servers on 1.10.0 or newer update themselves (Settings → Server updates). The zip contains no config.php, so yours is kept.

New in Sealpost 1.13.0

• addy.io aliases (Settings → addy.io aliases → I use addy.io). Writing through an addy.io alias puts the real recipient inside the To address: shop+sam=example.org@example.com goes to sam@example.org. With the setting on, Sealpost encrypts to, looks up online and assigns the key of that real address. The To address stays as it is, so the mail still goes through addy.io.
• addy.io's own domains and the domains of your "Send as" addresses are recognised by themselves. Add other custom domains under My other addy.io domains.
• The composer's key chips show the real recipient ("via addy.io"), and warn that a signature or attached key shows the addresses on your key.
• Find key online now also assigns an imported key to the contact for that address if it had none.
• The setting syncs with Sealpost Web (server 1.11.0 or newer).

Upgrading from 1.12.0: Settings → About & updates → Check for updates. From 1.11.0 or older: install this version once with the installer or the .sealpost file (Install update file…).

Also included: Sealpost Server 1.11.0

• The same addy.io setting in Sealpost Web.

Earlier versions: see the version history in sealpost/README.md and, for the server, README.txt.

Sealpost Server 1.11.1

Sealpost Server + Sealpost Web for your website (PHP 8 + SQLite). Sealpost Web is webmail for your own email account, kept in sync with Sealpost on your computers. It is not an email server: your mail stays with your email provider.

Servers on 1.10.0 or newer: Settings → Server updates → Update now (or wait for the card after you sign in). The package is signed; config.php and your vault are never touched.

New install: upload the contents of sealpost-server/, copy config.example.php to config.php and set your own setup_code, then open status.php.

New in 1.11.1

• Folder icons: tap a folder's ⋯ (or right-click it) → Choose icon… and pick one of about 85 icons. A pinned folder can show its own icon instead of 📌; Use default icon puts the usual one back.
• Renamed or moved folders keep their icon (and their pin).
• Icons sync with Sealpost on your computers. The desktop app shows them from Sealpost 1.13.1 on.

Sealpost Server 1.11.0

Sealpost Server + Sealpost Web for your website (PHP 8 + SQLite). Sealpost Web is webmail for your own email account, kept in sync with Sealpost on your computers. It is not an email server: your mail stays with your email provider.

Servers on 1.10.0 or newer: Settings → Server updates → Update now (or wait for the card after you sign in). The package is signed; config.php and your vault are never touched.

New install: upload the contents of sealpost-server/, copy config.example.php to config.php and set your own setup_code, then open status.php.

New in 1.11.0

• addy.io aliases (Settings → "I use addy.io"). Writing through an addy.io alias puts the real recipient inside the To address (shop+sam=example.org@example.com goes to sam@example.org). With the setting on, Sealpost Web encrypts to, finds online and assigns the key of that real address. The To address stays as it is, so the mail still goes through addy.io.
• addy.io's own domains and the domains of your "Send as" addresses are recognised by themselves; add other custom domains under "My other addy.io domains".
• The composer's key chips show the real recipient ("via addy.io") and warn that a signature or attached key shows the addresses on your key.
• The same setting as Sealpost 1.13.0 on your computers; it syncs between them.

Sealpost 1.12.0

Sealpost is an email client with OpenPGP built in (sign, encrypt, decrypt, verify, key management) for Windows, macOS and Linux. Sealpost Server is a small PHP package for your own website. It keeps your accounts, contacts, keys and settings in sync between your devices, end-to-end encrypted, and adds Sealpost Web: webmail with the same PGP features that can also be added to an iPhone home screen.

Downloads

File	For
Sealpost-Setup-1.12.0.exe	Windows 10/11 installer
Sealpost-1.12.0-arm64.dmg	macOS 13 Ventura or newer, Apple Silicon (M1/M2/M3/M4…)
Sealpost-1.12.0-x64.dmg	macOS 13 Ventura or newer, Intel
Sealpost-1.12.0-macOS12-arm64.dmg	macOS 12 Monterey, Apple Silicon
Sealpost-1.12.0-macOS12-x64.dmg	macOS 12 Monterey, Intel
Sealpost-1.12.0-amd64.deb	Ubuntu, Debian, Mint: sudo apt install ./Sealpost-1.12.0-amd64.deb
Sealpost-1.12.0-x86_64.AppImage	Any Linux (64-bit): chmod +x it, then run it
Sealpost-1.12.0.sealpost	Update file for an existing install: Settings → About & updates → Install update file…
Sealpost-Web-Server-1.10.1.zip	Sealpost Server + Sealpost Web for your website (PHP 8 + SQLite)
Sealpost-source-1.12.0.zip	Source code (the same as the v1.12.0 tag)

Windows: the installer isn't code-signed, so SmartScreen shows "Windows protected your PC". Click More info → Run anyway.

Mac: the app isn't notarized. The first time, open System Settings → Privacy & Security and click Open Anyway (macOS 12: right-click Sealpost in Applications → Open).

Linux: passwords are kept in your login keyring (GNOME Keyring / KDE Wallet).

Server, new install: upload the contents of sealpost-server/, copy config.example.php to config.php and set your own setup_code, then open status.php. Servers on 1.10.0 or newer update themselves (Settings → Server updates). The zip contains no config.php, so yours is kept.

New in Sealpost 1.12.0

• Check for updates (Settings → About & updates): looks for a newer release here on GitHub, then downloads and installs its update file. Sealpost only checks when you click the button.
• Releases on GitHub button opens this releases page.
• Example addresses in Settings now use example.com.

Upgrading from 1.11.0 or older: install this version once with the installer or the .sealpost file (Install update file…). Later updates can then be found with Check for updates.

Also included: Sealpost 1.11.0 (Mac)

• Sealpost for macOS 13+ and a separate macOS 12 build, Apple Silicon and Intel. Standard Mac menu bar and ⌘ shortcuts; passwords are kept in the Mac Keychain.

Earlier versions: see the version history in sealpost/README.md and, for the server, README.txt.

Sealpost Server 1.10.1

Sealpost Server + Sealpost Web for your website (PHP 8 + SQLite).

Servers on 1.10.0: Settings → Server updates → Update now (or wait for the card after you sign in). The package is signed; config.php and your vault are never touched.

New install: upload the contents of sealpost-server/, copy config.example.php to config.php and set your own setup_code, then open status.php.

New in 1.10.1

• Example addresses in the README and in Settings → Mail accounts → "Send as" now use example.com.
• Downloads and updates link to https://github.com/jeffbristow/sealpost/releases