Steps for sending pre-scripted emails to contacts.
1. Go to the Customers Module.
4. On the 'Engage' tab select any template from the pre-built template available here and select the entity from which you want to send the email. Learn how to set up email templates.
P.S. - Selecting the right entity is important because email settings and branding with which your email will be delivered are based on the entity you select. Email branding and email settings are per entity.