[Solved]: Gmail batch HTTP request returns 400 'Bad Request'

If anybody has experience with this sort of thing, help would be appreciated:

I’m able to successfully make this request using cURL and Postman. Is there a way to inspect meteor’s outgoing http request?

Try to start meteor as follows:

NODE_DEBUG=request meteor

It should output some useful debug information.

Thanks @M4v3R. Turns out erroneous newline whitespace was the issue.