Open Email Client is a powerful IMAP and POP3 email client based on the notmuch indexing engine. Developed by InBasic, this Chrome extension offers a simple and efficient way to manage your emails.

The extension consists of three main sections: "List" view, "Tree" view, and "Search" view. In the "List" view, you can easily display entries in a search query, making it convenient to navigate through your emails. The "Tree" view lists all the folders inside the root Maildir, providing a structured overview of your email organization. The "Search" view allows for custom search, enabling you to find specific emails quickly.

Open Email Client acts as a graphical user interface (GUI) for notmuch, a command-line email indexing tool. It is important to note that before using this extension, familiarity with terms such as notmuch, offlineimap (or another command-line email fetcher), and Maildir folder structure is recommended.

Furthermore, users have the option to customize the extension by adding custom commands to enhance the user interface usability. Additionally, a single periodic job can be defined to fetch emails and display a toolbar badge text.

For more information and answers to common questions, be sure to check out the FAQs page.