Workflow and enewsletters

Hi, I am currently using the free version of ZohoCRM. Someone mentioned to me that I might find the workflow function useful, however, I understand that I would need to go onto the paid version to use it. Is there any trial of it available to see if I really will use it?

Also is is it possible to send enewsletters via Zoho, if so, how much would that be and is it is integrated with ZohoCRM?

Thanks