Transactional emails are an essential part of an eCommerce website that contains information the recipient wants after completing a transaction. Whenever your customer makes some purchase form your e-store then they receive a transactional email related to order confirmation and shipping details. These types of mail have a high open-rate because these types of emails contain order completion info, account activation email,  password reset email and many more. That’s why they are called transactional emails. Generally in eCommerce, there are two types of email sent by store owner Marketing email and Transactional email. Marketing emails are sent in bulk targeting groups of people that fall under the same buyer behaviors. Read more on https://bit.ly/2IQAtq4