Simple Mail Alternatives

Simple Mail

Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox.

Usage:
Configure one or more accounts in Preferences, set account refresh time and get notified of new mail. When new mail arrives, Simple Mail shows new messages count in status bar. You can click Simple Mail icon to open received messages in a separate browser tab. Also Simple Mail has a toolbar button, which you can put on toolbar to access SM easily.

Features:

Accounts
Multiple email accounts
POP3/IMAP/SMTP protocols
Automatic checking on specified timeout
Address Book
Autocomplete box suggests recipient names/addresses as you start typing them
Groups of contacts
Display Address book in main Simple Mail window
Folders
Create custom folders
Drag-n-drop folders and messages into folders
Use filters to automatically sort incoming messages into folders
New message composition
WYSIWYG editor. Customize font/color of your message
Smiles. Use predefined smiles or easily add your own
URLs are automatically converted to hyperlinks as you type them
Appearance
Right-click on toolbar to choose "icons/text/icons and text" mode
Additional columns for folders can be turned on (unread/total/size)
Switch window layout by clicking on an icon in the top-right corner
Other
Store your mailbox on a Flash drive
Sort messages by clicking on column headers