Mulberry

Outlook, part of the Microsoft Office suite, is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

Based on Thunderbird but Postbox is not open source. "A new way to work with email Postbox offers powerful new ways to find, use, and view email messages and content, …

Sparrow is a minimalist mail application for Mac. It was designed to keep things simple and efficient. No fancy stuff here... just your mail and nothing else. Sparrow supports all …

Opera Mail powerfully organizes, indexes, and sorts your messages. It has spam filtering (both automated and Bayesian), supports POP3 and IMAP, newsgroups as well as Atom and RSS feeds. Opera …

Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features ...

Banckle Email is a business email solution supporting multiple protocols, video email, text and video chat. Considering your business needs, the email communications are SSL secured and its advanced search...

Mutt is a small but very powerful text-based mail client for Unix operating systems.

Airmail is a lightweight and lightning fast mail client for Mac. Feature list: Accounts: - Unified Inbox and folders - Multi Account with editable html signatures. - Aliases management with …

KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts,...

Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are...