Betterbird is an enhanced version of Thunderbird with new features and bug fixes not available in Mozilla Thunderbird.

Mailspring is an easy-to-use cross-platform IMAP email client.

SmarterMail is a Microsoft Exchange alternative that natively supports MAPI.

Mozilla Thunderbird Eclipse is an email client prioritizing safety, speed, and user-friendliness. It has numerous built-in features, such as easy message search, customizable views, and IMAP/POP and RSS support. A Portable version is also available.

MBox Viewer is a lightweight, portable, and free tool for Windows that makes opening, reading, and recovering MBOX and EML files simple

POP Peeper is an email notifier that runs in your Windows taskbar and alerts you when you have new email messages.

Mozilla Thunderbird Eclipse Portable is an email client designed with a focus on safety, speed, and ease of use. It comes equipped with a variety of built-in features that enhance the user experience. The latest beta and installer/Linux/Mac versions are also available.

Mozilla Thunderbird Eclipse Portable is an email client that prioritizes safety, speed, and user-friendliness. It has numerous built-in features, such as easy message search, customizable views, and IMAP/POP and RSS support. Available as an installer and for Linux/Mac.

Becky! Internet Mail is a feature-rich Internet email client.

Mailtrack is a Chrome extension that seamlessly tracks your Gmail, keeping you informed of the status of your message.

Gpg4win (GNU Privacy Guard for Windows) is encryption software for files and emails.

Mozilla Thunderbird Eclipse ESR is a versatile and free email application that stands out due to its ease of customization and a rich set of features that enhance user experience.
Portable version also available.

Mozilla Thunderbird Eclipse ESR Portable is a highly customizable email application that offers a wide range of features to improve the user experience. Its versatility allows users to tailor the application to their specific needs, making it an excellent choice for managing email effectively. Available as an installer as well as for Linux and Mac.

MailStore Home lets you archive your private emails from almost any email source and search through them efficiently.

Mail Password Decryptor is a handy piece of software to instantly recover Mail Account passwords from popular email clients and other desktop applications.

Mozilla Thunderbird Eclipse is an email client prioritizing safety, speed, and user-friendliness. It offers a wide range of built-in features, including a user-friendly message search, customizable views, and support for IMAP/POP and RSS. The latest beta and a portable version are also available.

The Bat! Home Edition was created for dealing with the ever-growing volume of emails as quickly as possible, saving you valuable time.

MailWasher allows you to preview multiple accounts and all aspects of your email before you download them.

Foxmail is a free lightweight email application that offers you many useful features and a user-friendly interface and supports POP3 accounts, as well as Hotmail accounts, with support for HTML email, mailbox encryption, multiple accounts and more.

OutlookAddressBookView is a free email utility that displays all recipients' details in the address books of Microsoft Outlook.

Email Studio .NET is a focused, desktop-based tool built for anyone who needs to design, manage, and send personalized emails, without relying on bloated web apps or overkill marketing suites.

Mail PassView is a small password-recovery tool that reveals the passwords and other account details for all popular email clients. Portable version also available.

Proton Mail offers a refreshing change if you're tired of your inbox being a data mine for advertisers.

eM Client is a feature-rich email client that includes a modern, easy-to-use interface and offers a calendar, tasks, chat, contacts, and more.

VOVSOFT VCF Editor is designed to manage and edit Windows vCard files (VCF) efficiently offline.