A lot of people just delete them without reading. That was a sackable offense in my last job. And because we were on MS Exchange if you put a read-receipt on your email to someone and they deleted without reading it was flagged up.
Most of the time unless it is know Spam
“Better a true enemy than a false friend.”
At work? I would read the subject line first to determine if it applies to me. If not, bye-bye.
At home? I only read specific emails.
"Injustice Anywhere Is A Threat To Justice Everywhere." ~ MLK
YES, YES I DO