GyazMail is an all-new email client for Mac OS X. It is newly developed from the ground up to offer you a full-featured but easy-to-use package based on the Cocoa framework.

Features:

• Multiple accounts
• Storing individual messages as single files (RFC 822 format)
• Multiple character set support, including UTF-8 (Unicode)
• Main window with 2 or 3 panes
• Complete customization of display fonts & window colors
• Message threading
• HTML message display
• Junk (Spam) Mail Filter (SpamSieve) support
• Ability to search messages across multiple folders and with multiple criteria
• Rules and Filters for incoming messages
• Templates and Editable reply header for outgoing messages
• Sends messages individually or in batches
• POP3/IMAP/SMTP support
• SSL/TLS support
• IPv6 support
• Remote message function
• Fully customizable keyboard shortcuts
• Synchronization with Apple's Address Book (Mac OS X 10.2 or later)
• Mail address auto-completion
• Numerous Dock-related features
• Message import (Unix Mailbox, Apple Mail)
• Message export (Unix Mailbox)
• Regular Expressions support (Oniguruma)
• AppleScript support (iCal e-mail Notifications, iPhoto Mailer Patcher)
• Growl support

Limitations: 40-day trial.

Requirements:
OS X 10.3+
Universal Binary