November 24, 2025
Microsoft 365 tools for successful side hustles and freelancers
Level up your freelance game with AI tools designed for side hustles and entrepreneurs.
Learn moreIf you’re combining multiple email addresses to one Microsoft Outlook account, chances are you might have duplicate contacts. These can clutter up your address book and make it confusing when you’re sending out your next email. Learn how you can merge and streamline duplicate contacts in Outlook.
If your contacts have different work and personal email addresses, they can be listed with the same contact name but show up as two separate entries. An address book will have provisions for multiple email addresses under the same contact name, which makes it easy to determine where your message should go.
Spend less time organizing your life and more time enjoying it with Outlook
Learn moreAdditionally, synchronizing contacts can create duplicates. This can happen across apps such as LinkedIn, Facebook, or Twitter, as well as synchronization between laptops and mobile devices. Depending on how your contacts are listed across these platforms, their names can differ (e.g. Stephen Jones, Steve Jones, or Steve J.) and still represent the same contact.
Lastly, manually typing in contacts can lead to misspellings. These can sometimes be automatically saved as new contacts. It’s important to go through your address book regularly to purge duplicate or misspelled contacts and avoid confusion down the line.
Outlook’s advanced organizational features can automatically process contacts, but it’s worth combing through your contacts and keeping them efficient. The following process uses Outlook and Excel and saves your contacts as a spreadsheet that you can edit and reimport back to Outlook.
Here’s how you can manually merge your contacts:
And you’re done! When you have a lot of contacts, navigating through them can seem intimidating—but these organizational tips will save you time and stress in the long run.
The powerful productivity apps and creativity tools in Microsoft 365 just got better. Work, play, and create better than ever before with the apps you love and Microsoft Copilot by your side.
Try for free