David Harris - 11.5MB - Бесплатно (Freeware)
Pegasus Mail is a free, standards-based electronic mail client suitable for use by single or multiple users on single computers or on local area networks. A proven product, it has served millions of users since it was released in 1990. It is extremely feature-rich and powerful, yet remains small and fast.

RITLABS - 35.2MB - Бесплатно (Freeware)
The Bat! is a secure email client software, built to protect your correspondence against third-parties.

The Bat! protects your information through multiple encryption streams with the options to encrypt your emails on disk and during communication through an SSL/TLS connection. Free of global email providers that keep your messages in the cloud, and free of Web clients, The Bat! ensures your data stays private.

The Bat! Windows mail client is able to process and store an unlimited number of messages and has no restriction on the number of email accounts you can use.

More key features include:

  • PGP, GnuPG and S/MIME support
  • Internal HTML Viewer
  • Safe handling of attached files
  • Selective download
  • Powerful filtering system
  • The Bat!’s own Address Book
  • Handy templates
  • RSS Feed subscriptions

RITLABS - 32.5MB - Бесплатно (Freeware)
The Bat! is a secure email client software, built to protect your correspondence against third-parties.

The Bat! protects your information through multiple encryption streams with the options to encrypt your emails on disk and during communication through an SSL/TLS connection. Free of global email providers that keep your messages in the cloud, and free of Web clients, The Bat! ensures your data stays private.

The Bat! Windows mail client is able to process and store an unlimited number of messages and has no restriction on the number of email accounts you can use.

More key features include:

  • PGP, GnuPG and S/MIME support
  • Internal HTML Viewer
  • Safe handling of attached files
  • Selective download
  • Powerful filtering system
  • The Bat!’s own Address Book
  • Handy templates
  • RSS Feed subscriptions 

IncrediMail Ltd - 12.5MB - Бесплатно (Freeware)
IncrediMail is a free email program that manages all your email messages, communications, contact details, and email transactions. IncrediMail is all about having fun with your email.

Key Features:
  • Choose from 100's of amazing email backgrounds
  • Add fun emoticons and animations to your emails
  • Bring your emails to life with animated 3D effects
  • Get notified of incoming emails by special animated characters (we call them Notifiers)
  • Manage all your emails from different accounts (like Yahoo and Gmail) in one place

eM Client - 50.1MB - Бесплатно (Freeware)
eM Client integrates E-mail, Calendar, Contacts, Tasks and much more. eM Client delivers the most comprehensive calendar interfaces on the market, giving users the ability to simultaneously view multiple calendars from multiple sources.
Besides, eM Client is optimized to fully synchronize with Gmail or any other mail server. eM Client supports full import from MS Outlook, Outlook Express, Windows Live Mail or Thunderbird. You can backup or synchronize all your e-mails, contacts, calendars and tasks on-line or to any mobile device using Active Sync.

Mozilla Corporation - 38.5MB - Бесплатно (Freeware)

Почтовый клиент Mozilla Thunderbird имеет простой и гибкий интерфейс. Легко настроить клиента по себя, добавить и удалить кнопки на панели, изменять размеры окон. Программа распространяется абсолютно бесплатно, но незаменима в работе. Основное удобство - возможность создания нескольких учетных записей почты. Все ваши почтовые ящики всегда под рукой и на виду, происходит автоматическая проверка новых сообщений на всех ящиках. Почту с нескольких ящиков можно хранить как в отдельных папках, так и в одной. Система поиска сообщений очень удобна. Фильтр сообщений сможет найти забытое письмо по любому вхождению поискового запроса по теме, телу сообщения, а также по отправителю или получателю.