From this teaser in teh bottom right, "What does BlueMailCentral do for the environment? Because you use BlueMailCentral, your CO2 emission is lesser than when

From this teaser in teh bottom right, "What does BlueMailCentral do for the environment? Because you use BlueMailCentral, your CO2 emission is lesser than when you would not use BlueMailCentral. The exact amount of reduced CO2 is impossible to calculate, but a reduction is.." Lesser should be less.