What is the idea behind these emails?
The drive reports bad sectors pending for reallocation (HDD) or retirement (SSD).
What is the recommended way to turn them off?
Run a long self-test (smartctl -t long ...). Also check Device Statistics and Pending Defects log (smartctl -l devstat -l pending ...). If no bad LBA is reported, disable the emails by '-C 197+ -U 198+' in smartd.conf. See "man smartd.conf" for details. Otherwise fix the bad sectors by overwriting. -- Regards, Christian smartmontools.org

