MailTags lets you add comments, due dates, project notes and priority rankings to your messages, all without leaving your Inbox! MailTags is a feature-packed companion to Apple Mail: Integrated interface – Add tagged keywords, project notes, and priority rankings through a convenient side panel. iCal supportCreate synchronized ToDos and Events in iCal directly from Mail. IMAP support – Sync your tags with your IMAP server for access across multiple computers. Helpful list display – Display your tags in extra columns in your message list so you can track due dates as they approach. Customize Mail rules – Create smart rules for automatic tagging of new messages. Mail search integration – Search your tags from Mail’s search field. Narrow the search by keywords, projects or notes. Smart Mailbox integration – Build smart mailboxes for searching your messages by keywords, projects, and due dates. Applescript compatible – Construct Applescript work flows for accessing your MailTags data for use them in other applications.
