Online PR and E-CRM

What is Public relation PR ?
What is Customer Relationship Management CRM ?
CRM vs e-CRM
PR vs Online PR (e-PR)
How to increase your sales using Online PR?
Free and Paid eCRM techniques.
Enhance customer retention with social media.
Build stronger relationships with existing customers/clients using mailchimp and other tools.
Blog and interact with your customers.
Using e-mail marketing techniques.
Interact with your customers using WhatsApp lists and groups.