Postcard is a new email client for GNOME, built with AI

Postcard, a new email client for GNOME built in Python with GTK4/libadwaita, was released by solo developer gxanshu on GitHub, who used AI coding tools to create the app. The client features a Geary-like multi-column design, uses imaplib and smtplib for networking, a local SQLite index for searching, WebKitGTK for HTML rendering, and libsecret for password storage.

Postcard is a new email client for GNOME that has echoes of Geary. The app is the work of a solo developer, gxanshu on GitHub, who is upfront about using AI coding tools to bring his “modern mail client” to life. Postcard is built in Python with GTK4/libadwait. It uses imaplib and smtplib for networking, a local SQLite index for searching, WebKitGTK for rendering HTML and libsecret for keeping passwords safe. Postcard will look familiar to fans of Geary, another GTK email client, as it uses a similar multi-column design with folder in a resizable sidebar on the left, a message list … You're reading Postcard is a new email client for GNOME, built with AI https://www.omgubuntu.co.uk/2026/08/postcard-gnome-email-client , a blog post from OMG Ubuntu https://www.omgubuntu.co.uk . Do not reproduce elsewhere without permission.