Thunderbird Visit Website Visit Website Manage your calendar, contacts, and email inbox with a free client from Mozilla
Best Office Software in 2026 HCL Notes An email client built for enterprises that includes a large email server, messenger application and more Mailbird A high-performance desktop email clients for GMail and Microsoft Exchange users on Windows eM Client Email client packaged with other helpful features such as tasks, calendars, notes, chat, and more Amazon WorkMail A combined calendar and email program that helps you function efficiently Airmail A high-performance, streamlined email client with advanced spam filtering features for Apple smartphones, tablets, and laptops Zimbra Desktop Open source email solution for managing all email accounts in one fully-featured app
