Permissions and Essentials Fails Need help!!!

Code:

# Supports "Default" and "GroupUsers"
plugin:
    permissions:
        system: default

##
# Groups can contain inheritance.
#  To make a group inherit the permissions from another
#  group simply place the groups name in the "inheritance:"
#  field seperated by commas.
#
#  Example: inheritance: Default,Admins,
##
#  All permissions including the asterisks must be placed in single quotes.
#  like so:
#
#      - 'general.spawn'
#
#  Otherwise errors will happen!
##
#  Globalized Permission settings:
#
#      If a permission contains periods (.) you can denote a globalized parameter:
#
#          - 'general.*'
#
#      This will allow you to use all general commands.
#
##
#
#  Single Asterisk denotes all commands:
#
#      - '*'
##
groups:
    Default:
        default: true
        info:
            prefix:
            suffix:
            build: true
        inheritance:
        permissions:
            - 'essentials.help'
            - 'essentials.msg'
            - 'essentials.afk'
            - 'essentials.rules'
            - 'essentials.motd'
            - 'essentials.me'
            - 'essentials.list'
            - 'essentials.mail.send'
            - 'essentials.helpop'
            - 'essentials.mail'
    Moderator:
        default: false
        info:
            prefix:
            suffix:
            build: true
        inheritance:
            - Default
        permissions:
            - 'essentials.time'
            - 'essentials.tp'
            - 'essentials.tphere'
    Admins:
        default: false
        info:
            prefix: '&b'
            suffix:
            build: true
        inheritance:
            - Moderator
        permissions:
            - '*'

##
# DarkGrave has control over all commands.
# sk89q can use /spawn & /time
##
users:
    monzi5:
        group: Admins
        permissions:
            - 'essentials.give'
    starcode:
        group: Default
        permissions:
    jesperbirkmose:
        group: Default
        permissions:
    thespix:
        group: Default
        permissions:

why can't my Default users not use /mail.
i tryed everything!

actually they can not use any command

 

post your permissions config file and answer all the questions in http://forums.bukkit.org/threads/you-need-help-we-need-this-information-to-help-you.2018/