This is one trait that the Gmail team has always maintained even until now, and it is claimed that less than 0.1% of email in the average Gmail inbox happens to be spam, with the number of wanted mail ending pup in the spam folder having an even lower percentage, which would be less than 0.05%. Nothing’s perfect, and Google has decided to implement new methods to filter out spam.
The Gmail Postmaster Tools will come in handy to assist qualified high-volume senders analyze their email, and this will comprise of data on delivery errors, spam reports, and reputation, allowing them to check out any potential bumps, to study best practices, and assist Gmail in routing their messages to the correct place. [Press Release]