You can include the following things to your email template

1. Custom Variables : You can click on ‘{{}}’ symbol on the template to create custom variables. For ex. You can create two custom variables in your template {FName} and {LName}

Hi {FName} {LName},

And when anyone tries to embed the template in the email, she gets a prompt which asks her to replace the variables which actual values.

2. You can include hyperlinks in the template. Please copy paste any text/ link in the body of the template and click on ‘≈’ to get a prompt asking you the URL where the link will point to.