Export/copy e-mail template HTML

My request is as the title says.

In my case I have to create an automation that will send an e-mail in a certain condition. The node responsible for e-mail sending accepts HTML, so I just have to paste the HTML of the template and it works. Currently, I have to send myself a test e-mail and open it’s source code and then copy it. It would be a way easier process to just have the export/copy HTML option in the e-mail template builder.

PS I feel I have to do this in this way because I couldn’t find a way to send the e-mail on an external API event (that I would generate in the automation tool). That would be the most convinient tbh.