Express integration

[gneray]

This is an external tracking issue to:

1. Gauge interest from the community for this feature
2. Learn about what you'd want to see out of it if we worked on it.

So please:

1. Upvote the issue if it's important to you, and
2. Comment with any relevant info on your requirements use cases, etc.

Thanks!

PS We do all our internal engineering issue tracking separately in Notion, so you won't necessarily see regular updates to the project status here even once we begin work.