>$6/user/m, but if you want to use ACLs to control anything in a workable way, it jumps 3x to $18/u/m.
It's market segmentation, needing ACLs is a sign you're at least an SMB, and to a business of nearly any actual size, the difference between $6/user and $18/user is 0.
It's market segmentation, needing ACLs is a sign you're at least an SMB, and to a business of nearly any actual size, the difference between $6/user and $18/user is 0.