Add "preview template" option for newsletters

I am helping setup a newsletter for someone, and I’d like to test out a custom template. It’d be ideal to, on the settings page, have a “preview template” button.

It seems like the only way to do this is to queue up a scheduled newsletter, possibly requiring a new post itself, and view it from there. There might be another way I am missing. If that’s the case, it would be nice to have that made more clear in-app.

Maybe Mitch’s workaround could work for you as well?

I should have probably titled that post “partly solved.” It solved my problem at the time. But Micro.blog really needs a “send test mail” button that would send a mail to the blog author and additional email addresses added manually at the time of send.