On any of the Audiogon Forum pages, click on your screen-name at the upper right, then select "Email Preferences." On the screen that will appear, uncheck everything you don’t want to receive (such as "daily digest of Forum activity"), and click "save preferences."
You can also get to that page from the Audiogon home page, by clicking your screen-name at the upper right, then "Dashboard," then "Email Preferences."
Regards,
-- Al