If you have accidentally deleted contacts and need to retrieve them, you can use Google’s built in contact restore feature. This will allow you to restore any deleted contacts from the past 30 days. You even have the ability to restore contacts within a specific time frame, which is useful when you want to undo an import or merge.
Step 2: Select ‘More’ from the action buttons at the top of the screen and then select ‘Restore Contacts’
Step 3: Choose a time frame to restore your contact list
Want to learn more about Google Contacts? Learn how to set up contact delegation here.