InboxVudu finds important emails you've received or sent, and highlights the portions that require your attention. As a free service, it's worth a spin, but other email assistants are more sophisticated.
Inky is a free email client that pulls together all your inboxes and gives you unique views of your messages. Inky works well for personal accounts, but doesn't have many advanced features for email power users.
Inky mail is a free email client that pulls together all your inboxes and gives you unique views of your messages. The Mac version of Inky works well for personal accounts, but doesn't have many advanced features for email power users.