Google's Gary Illyes replied on Twitter to an SEO saying there is no Google Sandbox.
@seobybrett we don't have a Google sandbox
— Gary Illyes ᕕ( ᐛ )ᕗ (@methode) December 12, 2016
The Google Sandbox concept dates back to 2004, and back in 2005, Google's Matt Cutts said there is no sandbox then as well. However, many SEOs felt there still was a Google Sandbox. In fact, just a couple years ago, many thought there was a Google Sandbox 2.0 but that conversation died down a lot.
In short, there is nothing internally at Google in their search algorithms around a Sandbox. It might feel like a sandbox, but it is not called that.
Forum discussion at Twitter.
