What service to send automatic welcome and post-purchase mail to customer?

What service to send automatic welcome and post-purchase mail to customer?

Hi,

I'm a developer with short experience of CRM and Marketing.
We want to integrate our application with Zoho email to send:
  • Confirmation email
    Email with a link to trigger account activation
  • Welcome email
    Personalize welcome message
  • Post-purchase email
    Purchase status message (received, in progress, and delivered)
As far as i know mail service has limited outgoing mail, and i don't really understand how CRM and Campaign can help. What services to use? Does Zoho email allowed automatic email as i mention above?

Thank you