We've released a feature in Labs which allows you to easily manage your duplicate contacts! It allows you to identify duplicate contacts in a List and either merge or delete them.
This new feature makes it easier than ever to maintain a clean List. It allows you to quickly identify duplicate contacts by searching across multiple fields in your list.
Plus a new merge option gives you freedom to manage duplicates without the risk of losing important contact information.
To use this new feature make sure you’ve turned on Merge Contacts in Labs, then go to Contacts > Duplicates and follow the prompts.
Let us know what you think by adding your feedback in our online community.