Build Flexible Organization
Use MailTags 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' 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 Mail Act-On, and other applications to fully integrate your email into your workflow.

Tag
MailTags goes well beyond keywords to allow a range of tag data including Keywords, GMail Labels, Finder Tags, Projects, Tickle Dates, Importance, Notes, Events and Tasks. Use MailTags flexible tagging window to set and edit tags on messages. New to MailTags 4 are full GMail Label support.
MailTags
MailTags displays your tags in both message lists and full message view making it easy to view your tags at a glance. Draw attention to important messages by prioritizing a message's color based on project, importance, tickle dates or more.


Find
MailTags integrates into Mail's search and smart mailboxes so that your tags become powerful way of finding messages. MailTags also organizes your time sensitive messages into tickle mailboxes so you can always see messages that need attention today, tomorrow or soon.
Rules
Mail's rule system is made more powerful with the addition of MailTags actions to automatically add tags to new messages, and even inherit tags from older messages in a discussion. Combine MailTags with Mail Act-On to create sophisticated tag based workflows work on demand and when sending messages.


Serve
MailTags operates with most IMAP servers, Exchange Servers and Gmail Servers. Set your tags on one computer and view them on another. (Please note that Gmail Servers will only save GMail Label tags. All other tags are stored on the computer.)
Requirements
- The latest version of El Capitan 10.11, macOS Sierra 10.12 or macOS High Sierra 10.13
Release 5.1.8
(2018-06-27 19:23:43)
- Fixed: @waiting not working as expected for EWS accounts on OS X 10.11 (5.1.7)
- Fixed: Console error message when downloading updates (5.1.7)
- Fixed: Error when rebuilding database (5.1.7)
- Fixed: Evaluation of Smart Mailbox criterion when project/keyword does not contain none (5.1.7)
- Fixed: Issue launching MailTagsHelper (5.1.7)
- Fixed: Performance,stability issues at launch related to smart mailbox counts (5.1.7)
- Fixed: Poor German localization in preferences (5.1.7)
- Fixed: Potential stability issue when closing message viewers or switching messages (5.1.7)
- Fixed: Stability issue when autocompleting keyword selection (5.1.7)
- Fixed: Stability issues when editing rules (5.1.8)
- Fixed: Tag display not updating in composer window when tags are changed (5.1.7)
Release 5.1.7
(2018-06-26 04:41:20)
- Fixed: @waiting not working as expected for EWS accounts on OS X 10.11
- Fixed: Console error message when downloading updates
- Fixed: Error when rebuilding database
- Fixed: Evaluation of Smart Mailbox criterion when project/keyword does not contain none.
- Fixed: Issue launching MailTagsHelper
- Fixed: Performance,stability issues at launch related to smart mailbox counts
- Fixed: Poor German localization in preferences.
- Fixed: Potential stability issue when closing message viewers or switching messages
- Fixed: Stability issue when autocompleting keyword selection
- Fixed: Tag display not updating in composer window when tags are changed
See all of the release notes for MailTags
Download the Yosemite/Maverick version