This is a convenient button since you'll typically have an inbox filled with rubbish, and you do not have to be alerted that you have to read it.
Nke a bụ bọtịnụ aka n'ihi na ị ga-enwe igbe mbata nke jupụtara na nzuzu, ọ dịghịkwa mkpa ka amara gị na ị mkpa ịgụ ya.