Go to https://seekingalpha.com/account/user_settings and scroll down - there is a button to unsubscribe from all email - I found this thru top menu mouse-over "My Authors", select "Author Email alerts" and when you get to that page click the tab for "Account" under the heading "Settings" (I just did this!)
PS-there is a button to delete your full account at the bottom!
Go to https://seekingalpha.com/account/user_settings and scroll down - there is a button to unsubscribe from all email - I found this thru top menu mouse-over "My Authors", select "Author Email alerts" and when you get to that page click the tab for "Account" under the heading "Settings" (I just did this!)
PS-there is a button to delete your full account at the bottom!