If I need to search for a term which comes up heavily in email mass marketing I cannot exclude a particular sender / term. For example I receive marketing emails from williams sonoma. If I want to search for a brand name such as 'staub' I receive infinite williams sonoma mass emails and cannot find any non marketing emails. If I try to exclude by searching for "staub -williams" for example that simply does not work. Even if I try a more general term such as "staub -cookware" that sort of works until it gets back to 2017 emails at which point it suddenly stops working and shows tons of email again with the 'cookware' term.