Roundcube is an open-source IMAP browser-based email client. It has gained popularity for supporting ACLs and utilizing AJAX (Asynchronous JavaScript and XML) technology. It has excellent features and end-to-end functionalities like email management, MIME support, and folder manipulation, to name a few. Besides, Roundcube offers message searching, spelling checks, calendars, and contact management seamlessly. Above all, it has a robust …