This past week we started offering 5 Gigabyte mailboxes for $3 per mailbox, per month with a 12-month prepayment. That is just $1 more than what 1 Gigabyte mailboxes cost. If you would like to upgrade to 5 Gigabyte mailboxes, you can do so by contacting Customer Care (it may take a couple of days to fulfill your request as we’ve got lots of businesses requesting upgrades already). We’re working on making automatic upgrades available via the control panel, but that isn’t quite possible yet. Coming soon!