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Spring Cleaning: How to Clean Up Mac Contacts (macOS Mojave Included)

Finally, here comes the spring! It's not only a season for the blossoming of local poplar and willow trees, but also the best time for spring cleaning - and I'm not just talking about cleaning out your closet or desk, it is also necessary to clean up Mac contacts with the best Mac contacts cleaner.

Clean Up Mac Contacts and Remove Duplicates
Use Cisdem ContactsMate to delete duplicate contacts, sync contacts with iCloud, Google, Facebook, Exchange, etc., export contacts to Excel, CSV, vCard, Numbers and other options, view, edit, group and tag contacts, among other things.
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You Know Your Contacts are Messy

Wanna call your client and only to find two different numbers for him? Then, which one is the right? Well, with our business and connection network growing, the Mac contacts address book gets in a mess along: more duplicate phone number, and duplicate emails, and more errors accumulated. Here below is a situation I have ever met:

- Lucy, I’m back in NYC!

- Who is that? Is that David? When can I see you? It’s really important! I miss you so much!

- Oh, sorry. It’s Robert…

- Which Robert?

The reason for it is that I have two contacts named Lucy in my contact list. It was so embarrassing! Quite a few times it happens to be very annoyance to meet those duplicate contacts when we need it emergently. Here below are some signs to remind you clean up Mac contacts:

  • You spent more time finding the right contact number than sending an email.
  • You only know a few hundred people, but your have over 1,000 in your Mac address book.
  • You have more junk contacts than actual contacts.
  • People have to wait for a long tine when asking you to send them a contact info.

It's Time to Clean Up Duplicate Contacts on Mac

If we never go to clean up them, we would always get troubled by this problem every time. So, don’t hesitate to clean up Mac contacts. It deserves making your contacts more neat and efficient. Here below are two popular duplicate contacts cleaner apps for Mac to help you easily clean up duplicate contacts on Mac.

contacts on mac

First of all, let's make some preparations. Before we go to clean up duplicate contacts on Mac, we need to collect and create a consolidated contact list from FaceBook, Google Gmail, Linkedin, OutLook, iPhone and other back up devices. You can also export them and save in CSV or vCard file format. And then, drag and import the vCard file to Mac OS X Contacts, so that you can start to clean up Mac contacts.

Use Cisdem ContactsMate to Deep Clean Up Duplicate Mac Contacts

Cisdem ContactsMate is an all-in-one contacts manager for Mac. In addition to offering all features that the Contacts app has, Cisdem ContactsMate also offers an easy way to clean up Mac contacts that Contacts doesn't have. It also allows you to analyzes, scan, detect, reports, and fixes dozens of problems from macOS and OS X Contacts.

More importantly, this Mac contacts cleaner utilizes the Mac OS X built-in contact database, it is able to sync with iCloud and any other service OS X Contacts supports (e.g. Google Contacts). So, anything entered into ContactManager will also sync in OS X Contacts.

  • System Supported: Mac OS X 10.7+, including macOS 10.13 High Sierra, macOS 10.14 Mojave
  • OutPut Formats Supported: CSV, vCard, TXT, Docx, HTML, Excel, Numbers, etc.

Download the free trial of Cisdem ContactsMate for Mac now!

Step 1. Automatically Sync with the Contacts App

The first time you run this contacts manager on Mac, it will ask you to allow access to sync with your Contacts. You need to choose "ok", and then your Contacts will be synced to Cisdem ContactsMate, that means, all of contacts databases from OS X Contacts are displayed on this app.

Step 2. Start Cleaning Up Your Mac Contacts

Firstly, Pre-set the Screen Conditions for Cleaning

Go to top menu toolbar, and click the "Cisdem ContactsMate” > “Preferences”, the preference window pops up. You can click and choose from 13 Screen Conditions as you like to ask it to help you find out the problems in your contacts.

Secondly, Scan Problem Contacts

Click the button "Scan", it can quickly scan and detect those problem contacts, and show you the results in the below window.

At the left hand, it shows you all the duplicates contacts details, duplicate pone number and incomplete contacts, unusual title, space, etc.

Thirdly, Clean Duplicates and Fix Errors

Click the problem contacts, its details are displayed on the right. You can choose to edit, merge, remove, ignore the errors.

For example, click the one of duplicate contacts, and then it shows the Problem, Solution, Details for you to process. You can choose Merge contacts, Delete this contact, Delete the ones you don't need, Ignore.


This Mac contacts cleaner does sensible things with duplicated contacts and fields and removing unwanted data through an easy to use interface. It can not only clean up Mac contacts effectively, but also detect and fix contacts that are in wrong formats or with fragmented info. Therefore it is a comprehensive tool for mac address book spring cleaning.

Use the Built-in Mac Address Book to Remove Duplicates

The Built-in Address Book on Mac is a computerized address book included with Apple Inc.'s macOS and OS X. It is specialized in organizing all of your contacts information. You can use it to load all of your contacts in every place, like iCloud, Exchange, Google, FaceBook, etc., and create and rich contacts with full information and notes. It is also a simple duplicate contact remover. I would introduce how to use it to remove and clean up duplicate contacts.

For more details about Learn how to create contacts and add Smart Groups to your Address Book, click “Learn about Address Book”.

Step 1. Launch the Contacts app on your Mac.

Step 2. Go to top Menu bar of the Contacts. Click "Card", and a dropdown list appears.

Step 3. Click "Look for Duplicates", and it will quickly find out those duplicated information.

Step 4. And you will see results as below. Click the blue button “Merge”to merge them into one.

clean up mac contacts


There are some limits of the Contacts app which can't offer you the best way to remove duplicates contacts. Below are some disadvantages.

  1. Except of looking for duplicates, the built-in Contacts can't help you finish more advanced cleaning tasks, such as, scan and detect those incomplete name, empty name, invalid characters, unusual title, etc.
  2. It can't show you the duplicated contacts details and conditions, where are the duplicates and errors, and how to fix it.

The above mentioned Cisdem ContactsMate is one of the best duplicate contact remover tools to remedy what Contacts can't do.

Download the free trial of Cisdem ContactsMate for Mac now!

More Tips on Spring Cleaning for Mac

  1. It's important to clean up Mac contacts regularly, especially when we back from some gatherings, business conferences or parties, it would be much beneficial to your social network.
  2. For the sake of caution, before you clean up your Mac contacts, it’s a good idea to back up your contacts, so that you won’t lose anything you may need by mistake.
  3. Also, don't forget to clean your Mac hard drive so as to free more spaces and speedy the Mac running. After we've cleaned up our contacts, the smooth experience may drive some of us to make further cleaning throughout our Mac. Go through your computer and delete other duplicate files, junk files, old files and applications that we do not need any more to free up our Mac space to the most. Besides, we'd better keep at least 20% of our hard drive free.

2018-02-24 03:04:07 / Posted by to Contact Manager Mac Follow @ Rosa

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