Do I need to add Mail Chimp or Cazoomi to my Zoho CRM for email marketing?

Do I need to add Mail Chimp or Cazoomi to my Zoho CRM for email marketing?

I would like to create an email marketing campaign out of Zoho CRM contacts module. Do I need an app like Mail Chimp and/or Cazoomi to get features like auto responder and opt out or can Zoho do all this by itself without the need for additional paid apps?