An email builder is a tool, usually in the form of software, that helps marketers and developers create beautiful emails with ease. They can be marketing emails (newsletters, promotional communications…) or transactional emails (account creation notifications, password resets, purchase receipts…).

Also called Email Service Providers (ESPs), those email marketing softwares commonly offer a drag-and-drop builder, which makes it easy to design responsive email templates. Responsive design is about making sure your email campaign will render well on a variety of devices, screen sizes, and email clients (such as Gmail or Outlook).
Finding the right email marketing software can be complicated. Whether you’re a marketer, a developer, an email designer or an all-around freelancer, here are a few important things to consider before choosing your emailing solution:
Result
Collaboration tools offered by some emails builders allow teams to design templates up to 33% faster.