A Sender Email is a little bit different from the sender domain. Though both are related to the “From” address of the campaign, they both have slightly different purposes. A sender email is the particular email address used within the “From” section of your campaign. It can be a particular person’s name or a specific department associated with your company. For example, if the sender domain is the company’s address, then the sender's email is the specific department or a contact person associated with the company.