Would like to start over with contacts

I finally am up and running after several frustrating days. This is my fifth email program. I had imported all my contacts the first day I had this up. In the meantime I had cleaned up my contact list in another email program. Not thinking, I then imported the cleaned up version. Now I have duplicates of just about every contact.

Is there some way I can empty the contacts and start over? Would it be easier to delete eM Client and reinstall?

I’d appreciate any help you can provide.

Thanks,
Linda

At the contact, press Ctrl+A to select all the visible contact. Press delete key to delete all highlighted contact. Repeat this process if you have more than one folder and/or account for contact.

After deleting all contact, you may start over.

You really are a Champ! Thank you so much for a prompt response.