MailTags for Mac

Name: MailTags
Rating: 4.2 (15 reviews)
Author: Indev

By Indev
Trial version
User Rating

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MailTags Analysis

AI Assisted Content · June 11, 2026

Not written by CNET Staff.

MailTags is an innovative email management software designed for Mac users, enhancing productivity and organization within email workflows. This trial version offers features such as tagging, scheduling, and tracking to streamline communication processes. Users can easily assign tags to emails for better categorization, helping to prioritize tasks and manage projects effectively.

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In addition to tagging, MailTags allows for the creation of reminders and deadlines directly from within the email client. This integration facilitates seamless scheduling without the need to switch between applications. The software also supports integration with various calendar applications, enhancing its utility for users who require efficient email and task management solutions.

MailTags for Mac

By Indev
Trial version
User Rating

Download now

Used MailTags for Mac?

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Full Specifications

GENERAL

Release: January 30, 2018

Latest update: June 11, 2026

Version: 5.1.5

OPERATING SYSTEMS

Platform: Mac

Operating System

OS X 10.8
Mac OS X
OS X 10.9
macOS 10.13
OS X 10.10
OS X 10.11

Additional Requirements: None

POPULARITY

Total Downloads: 1,334

Downloads Last Week: 0

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Last Updated

User Reviews

4.2/5

15 User Votes

memory sink = fatal flaw
17squaredNovember 12, 2017
Pros
(originally posted on MacUpdate) When it worked, I used it faithfully and found that it helped me organize my email in relation to the multiple projects I was working on.
Cons
Unfortunately, after having happily tried MailTags 3, I upgraded and purchased MailTags 4. I continued using it very happily until the upgrade to El Capitan at which point Mail became unusable with MailTags 4 installed. Mail becomes a memory sink, slows the computer to a crawl, and crashes frequently and unpredictably. While I enjoyed using Mailtags when it worked for me I cannot now give it a high rating as it's become unusable. My Mail settings did not change when I upgraded my OS X, and the problem is clearly tied to MailTags. Eighteen months later I missed MailTags, because when it worked, it proved really useful. I tried re-installing (Nov 2017) the most recent version (v5), and sadly, the same problem persists on Sierra.
Summary
On my setup (Sierra with Mail servicing 4 different email accounts) Mailtags causes Mail to become a memory sink, slows the computer to a crawl, and causes frequent crashes. Approach with caution.
Indispensable Tool for Mail
rjdbfreeMarch 26, 2008
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. This tool saves me a ton of time. It automatically tags all my incoming mail (according to the rules I set up). With this simple feature, I can file all my read messages into one folder and create smart folders to keep track of email while having a relatively clean and empty inbox. I also use this tool to create iCal apts from w/in mail when appropriate (it links the email msg to the event). WELL WORTH the price of admission.
The app makes Mail and iGTD rock (also, life a lot...
levinedrSeptember 18, 2007
Pros
Cons
Summary
...easier) This review was originally posted on VersionTracker.com. I am really confused by some recent comments/reviews about MailTags. I've used both iterations of this program for quite a while now with NO problems of any kind and have benefitted greatly from the organizational capabilities that MailTags adds to Mail, iCal and iGTD. With this program you can set up smart mailboxes that instantly organize important emails (and, BTW, the tags also work in MailSteward) so that you can find invoices, shipping notices, updated email addresses sent to you by business associates, friends and family. You can also easily use MailTags with the other apps mentioned to turn emails into useful and organized To Do's. I never understand why people are so quick to downgrade an app (espeically one with a long history of glowing reviews like MailTags) rather than take the time to figure out what they are doing wrong or not doing right. BTW, I am an intermediate level Mac user with no ties to this or any other software or hardware company.
the add-on from hell
VersionTrackerUserOpinionSeptember 15, 2007
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. I have tried this one a bunch of times now.What is my problem! Seems I just don't learn. In th past it caused Mail.app to behave erratically and then to crash. Now, Mail app will run for a while, but MailTags forces Apples's buggiest application to launch at the same time Ã¢?? the dreaded iCal, which causes the mail startup process to take what seems like forever. Messing with settings has no effect on this lovely experience. And if you want to have a good laugh, just try using the included MailTags Uninstaller to get rid of this buggy thing. It won't. You are stuck with it no matter how many times you run the Uninstaller and reboot your machine. Nice. Now you have to manually hunt down whatever files this nefarious little bugger installed that are gumming up the works. I'm on a G5 2ghz dual running 10.4.10. Hardly an exotic configuration. Does anyone actually test this thing before distribution?
Wonderful add-on
CortigSeptember 13, 2007
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. I couldn't live without it (well I could, but it'd be a mess ;-) ),
Excellent Product
macmageSeptember 7, 2007
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. Previously I complained about lack of customer service. Turns out that the emails were sent with my registration codes. For some reason I never got them. But now I do and can start using MailTags again! Since I do Web design for a living, trying to keep track of all the emails I get from people asking me to do things without MailTags would be a nightmare! It is an excellent product that makes my job much easier.
Re-registration Nightmare
Wm. CerniukAugust 26, 2007
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. Ok, it is now operating to the point where it does not recognize its own preference file. Every time Mail opens, MailTags wants me to register the software. I successfully do so and we run fine until either MailTags crashes Mail or I quit Mail. Then I must re-register and of course lose all my settings. Ironic that this all started going haywire right after I paid for this thing. Would not at all recommend this version.
A must have for Mail
CortigJuly 5, 2006
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. A truly great enhancement to Mail. They also make Mail Act-on. Both should be part of Mail - period!
Got Mail.app? Get MailTags
andrew108--2008June 22, 2006
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. It's just that good. Let's you work and think outside the folder dogma limitations. Some minor glitches with tagging, but Scott (the developer) was quick on the case with a tech support response. Highly recommended. Works in conjunction with their other product, Mail Act-On.
not great for imap
tiklerDecember 29, 2005
Pros
Cons
Summary
This review was originally posted on VersionTracker.com. bit of a deal breaker right there.... IMAP accounts NOTE: IMAP support is NOT complete and there may be issues or problems Ã¢?? Consequently, we are not supporting the use of MailTags with IMAP messages/Mailboxes. Use MailTags with IMAP message at your own risk.

Developer’s Description

By Indev

Attach metadata, due dates, projects, priorities to email.

With MailTags installed, you can add comments, due dates, projects and priority to your messages right inside your mail viewer window. You can then use this metadata as the basis for Spotlight searches, Smart Mailboxes, and Mail Rules. For example, you can create a Smart Mailbox that will show you all messages in project: "Great Novel" that have a due date in the next three days. MailTags also integrates with Mail Act-On to allow tagging of message via simple keystrokes, or by rules for receiving mail. For example, create an Act-On rule for the d key that will defer the due date of the message for 5 days.

MailTags for Mac

MailTags Analysis

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User Reviews

memory sink = fatal flaw

Indispensable Tool for Mail

The app makes Mail and iGTD rock (also, life a lot...

the add-on from hell

Wonderful add-on

Excellent Product

Re-registration Nightmare

A must have for Mail

Got Mail.app? Get MailTags

not great for imap

Developer’s Description