Workflow for existing postmark account

[viperfx]

I would really like to use this framework to develop postmark emails, however, it does not fit with existing tools.

For example, there is postmark cli (official) - https://github.com/wildbit/postmark-cli/ that allows for live preview and development of postmark templates. So it's easy to pull the templates from postmark, make changes and push them again (because the structure also setups the metadata).

Having a guide on how to use this with existing postmark tools will help a lot with adoption of real postmark users.