If it is Spam, always a possibility, that confirms the Email is live..
It is worth considering what has happened.
There are cases of companies using bogus Emails suggesting they have completed business or tendering quotations (Dear .... Following our meeting, please find attached the quotation we discussed....) in the hope it may attract business.
Those should, in my view, be reported as spam to Gmail.
A obvious error, perhaps from ( say) a local club with a small list of addressees is another matter- it is probably just a typo etc.