It really looks like a nice backend! I have substantial experience in creating email campains for clients.i must admit that an important features for mailings i

It really looks like a nice backend! I have substantial experience in creating email campains for clients.i must admit that an important features for mailings is a possibility to create responsive layouts, which are supported on different email clients... unfortunately i don't see the real value in using markdown for writing the email text. Maybe you can simplify one of these approaches for normal users: https://foundation.zurb.com/emails.html https://foundation.zurb.com/emails.html https://mjml.io/ https://mjml.io/