Step1: Login to WHM.
Step2: Go to Home >> Server Configuration >> Tweak Settings.
Step3: Locate the option Default user-defined quota value for new email accounts.
Step4: Specify the value of the quota.
Step5: Click on Save.
Step1: Login to WHM.
Step2: Go to Home >> Server Configuration >> Tweak Settings.
Step3: Locate the option Default user-defined quota value for new email accounts.
Step4: Specify the value of the quota.
Step5: Click on Save.