E-mail Mailer is a job title that refers to someone who is responsible for sending out emails on behalf of a company or organization. This person is responsible for creating, formatting, and sending out emails to customers, clients, or other contacts. They may also be responsible for tracking the success of the emails they send out, such as open rates and click-throughs. The job title can also refer to someone who is responsible for managing an email list, ensuring that all contacts are up-to-date and accurate.