Mails html display


Hello. I very like mailpile and successfully configured it for a lot of my mailboxes from a lot of Email servers. It’s work amazing, but I got a few small problems, the first of them:
I want to have a full view HTML view of messages, not all, only which I want… Maybe something like “Show html/remote content from this sender” like in some desktop mail clients. I can see a button to view a message in HTML, but when I click it - nothing happens, the message still displayed as a text… This is a little bit uncomfortable…

Can I somehow to view my messages in HTML? Maybe there a some plugin for this? I have a small experience in python/js programming, but maybe someone already have the same needs and already done something like this?