Yes, you can create leads or contacts from emails by following the steps given below:
To add leads in Client management system from email

1. In Client management system, click the Email tab.
2. In the Inbox, open your customer email.
3. In the Mail body section, click on the Client management system icon at the end of the email.
   
   
   
   
4. Choose Leads or Contacts from the drop-down list and click Add Now.
   
   
   
   
5. In the form, specify the lead/contact details.
   
   
   
   
6. Click Save.