Pixiu 1.1.2 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application is an intellectual property of longkai. The program belongs to Communication Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Pixiu is an Inbox and notification app for Gmail on macOS. With this program, you can view inbox snippets and incoming e-mail notifications on your menu bar. In the settings window, you can make some changes, such as pause/resume the syncing, change the syncing interval, feel free to revoke, start on login, and turn on/off the notifications.
You may want to check out more Mac applications, such as GeeMail, Mail Forward or PstExporter, which might be related to Pixiu.