The following option under the "Mail" tab within "WHM >> Server Configuration >> Tweak Settings" will allow you to change the default value:
"Default user-defined quota value for new email accounts"
Remember to ensure the option below it called "Default quota option for new email accounts" is set to "User-defined". Note that you have to change the quota for existing email accounts manually or utilize our API to develop a script that finds all email accounts and changes their quotas.
Hello guys, I'm in the same boat, having to find all email accounts and change their quota.
Can you point out to some script to do that as I'm not familiar with the API. I bet it must be just a loop and a couple commands, right?