How to control the used Gmail account when using slides.new, docs.new, etc.

Thanks to the new top-level domains, many companies provide short URLs to use their product quickly. CodePen has pen.new, CodeSandbox has react.new, GitHub has repo.new, and they're many more out there. These URLs make the web feel very app-like, I like that!

And of course, Google is providing new URLs with doc.new or docs.new and slide.new and slides.new, too. The problem with these URLs is that many people use Docs and Slides with multiple Gmail accounts.

Which account should be used when using docs.new? And what happens if Google constantly chooses the wrong account to create a new document.

Today I learned, that Google's new URLs support a URL parameter to specify the used Gmail account:

• docs.new/1 – primary account
• docs.new/2 - secondary account
• and so on...

That's pretty cool!