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Postcard is a new email client for GNOME, built with AI
Postcard is a new email client for GNOME sporting a modern design reminiscent of Geary.
The app is the work of a solo developer, gxanshu on GitHub, who is upfront about using AI coding tools to bring this “modern mail client” to life.
Postcard is written in Python with GTK4/libadwaita. It uses imaplib and smtplib for networking, a local SQLite index for searching, WebKitGTK for rendering HTML and libsecret for keeping passwords safe. It’s also open source, so the code is inspectable.
Visually, Postcard should look familiar to fans of the Geary email client, as it uses a similar multi-column design: folders in a (resizable) sidebar on the left, a message list in the middle and a reading panel on the right:
It supports email providers using IMAP and SMTP, but there’s no mention of POP and support for Exchange Web Services is, per the developer, not planned. Gmail access is provided via GNOME Online Accounts, so if you’re signed into an account there, Postcard can pick it up.
You can add multiple email accounts to Postcard, but it doesn’t currently offer a unified inbox for viewing all mail from all accounts in one super-lengthy message list.
Other features are the minimum you’d expect: notification on new mail, adjustable sync, threaded conversations and search tools. A basic mail composer offers rich text formatting, subject, Cc and Bcc lines and support for adding attachments.
The application’s UI is said to follow the GNOME Human Interface Guidelines (HIG) closely.
A signature can be defined in the (modest) Preferences dialog, alongside toggles to block remote images in mails (like tracking pixels) and keep the app running in the background when closed (which is needed to keep the mail connection alive).
There’s no PGP/GPG key setup, no built-in calendar, no client-side mail filters and so on. While power users are unlikely to be tempted by an app like this, suffice to say: for mail management, established clients like Evolution or Thunderbird fit better.