Before sending an email there's a check if for the given locale and email type exists custom email template. If it exists, it will be used instead of the default one.
You can manage your templates by accessing Email templates from the sidebar in Admin Panel.
First step is to select a type of email and add custom css styles.
The next step is to define an email’s name, subject and content for every language we want to support.
Any time you can preview your email by clicking Preview button. Remember that preview feature does not reflect in 100% what your client would see. Every email client may render the content in a little different way.
Summary Overriding defaults email templates using Sylius MailTemplate plugin is a simple process. Admin Panel user in a few clicks can replace any email template without overriding twig files, configuring sylius_mailer or accessing neither ftp nor ssh.