...it adds a superb level of functionality to Apple’s native Mail that you won’t be able to live without once you’ve tried it.
Build Flexible Organization
Use MailTags 3 to escape the constraints of folders and organize your messages by keywords, projects, importance, color, due dates and more. Quickly tag your messages using MailTags fluid tagging window.
Search Tags & Find Mail
Use MailTags 3's powerful search and smart mailbox integration to quickly locate your messages. MailTags data is concisely displayed inline with your messages and dynamically color messages based on importance, project, or upcoming date.
Create Email Workflow
Create rules to automatically assign tags to your incoming messages. Add tags to your messages as you compose. Combine MailTags 3 with Mail Act-On and Mail Perspectives, and other applications to fully integrate your email into your workflow.
More reasons to love Mail Tags
Comprehensive
MailTags gives you a complete range of metadata -- not just labels. Add Keywords, Projects, Importance, Notes, Reminder Dates, Colors, Calendar Events and Tasks.
Tag any existing message. Tag messages while composing.
Seamless
Edit your tags in MailTags' integrated popup window.
View tags on message quickly in both message lists and full message displays.
Collect tagged messages in Mail's Smart Mailboxes.
Automatically tag messages using Mail's flexible rules.
Look for tags on messages using Mail's built in search abilities.
In Sync
Synchronize tags information between computers via IMAP* and Microsoft Exchange servers.
Synchronize MailTags settings (preferred lists and tag based rules, mailboxes) using iCloud or shared folder services such as DropBox and Box.net.
Coordinated
Create Calendar events and Reminders directly from Mail.
Access projects from popular task management applications such as OmniFocus, Things, and The Hit List
Share tag data with popular information archival solutions such as DevonThink, EagleFiler and Mail Steward.
Exchange keyword tag information with other tagging software such as Tags.app, Leap and Punakea, using the OpenMeta tagging architecture.
See MailTags in Action
Documentation
*Note that GMail IMAP is not fully compatible with MailTags as tag data cannot be synced via a GMail IMAP server. Tags set on GMail IMAP messages will be saved on the local computer only.
Apple and Mail are trademarks of Apple, Inc. Microsoft Exchange is a trademark of Microsoft, Inc.