I don’t think google sandbox exists. Ya google try to pull down the new domain in serp. The same thing

Comment posted to SEO Tutorial – Google Sandbox Effect by SEO

I don’t think google sandbox exists. Ya google try to pull down the new domain in serp. The same thing not applicable with the old domain. The reason is backlinks. The old domains has relevant backlinks. If we starts seo on a new domain and increase the backlinks very fast google again penalize the new website.