@nebulon This plugin requires a file to be placed as part of the core files. We have to rework packaging of the /p/api directory to make it work. Not sure if it's worth it. Maybe we should provide a constructive error report to the upstream project on how they can help us by making the plugin installation only write to modifiable directories.
@timconsidine I was investigating this when trying to update mailtrain to v2, but decided to try this out pretty quick. It works very well, the mail template editor is quite modern we well. Only missing some proper authentication.
