diff --git a/check_gmailunread b/check_gmailunread
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+#!/usr/bin/env python
+import imaplib,getopt,sys
+
+#
+#    Copyright 2012 Peter Dyson <pete@geekpete.com>
+#    https://github.com/geekpete/nagiosplugins/ 
+#
+#    Licensed under the GNU General Public License Version 3
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+#
+# check_gmailunread.py
+# Nagios plugin to check number of unread emails in a gmail account
+#
+# This script logs into a given gmail account and counts the unread emails.
+# It will then alert based on the WARN and CRITICAL thresholds.
+#
+################################################################################
+
+### Define required nagios script settings.
+
+# define script name.
+scriptName=sys.argv[0] 
+
+# define script version.
+scriptVersion = "v0.1.0"
+
+# Nagios plugin exit codes
+STATE_OK       = 0
+STATE_WARNING  = 1
+STATE_CRITICAL = 2
+STATE_UNKNOWN  = 3
+
+# Clear default variable states
+nagiosState = ""
+gmailUser = ""
+gmailPassword = ""
+
+#####
+
+class Usage(Exception):
+    def __init__(self, err):
+        self.msg = err
+
+def usage():
+    print "Usage: check_gmailunread.py -u email_user -p email_password -w warn_unread -c crit_unread"
+    print "       check_gmailunread.py -h for detailed help"
+    print "       check_gmailunread.py -V for version information"
+
+def detailedUsage():
+    print "Nagios plugin to check how many unread emails are in a gmail account"
+    print 
+    usage()
+    print 
+    print "Options:"
+    print "  -h"
+    print "     Print this help message."
+    print "  -V"
+    print "     Print version information then exit."
+    print "  -u gmail_user"
+    print "     User name of the gmail account."
+    print "     For google enterprise accounts use the full email address:"
+    print "     eg, your.email@yourcompany.com"
+    print "  -p gmail_password "
+    print "     Password of the gmail account."
+    print "  -w warn_count" 
+    print "     Warning threshold count for unread emails."
+    print "  -c crit_count"
+    print "     Critical threshold count for unread emails."
+    print 
+
+
+# parse the command line switches and arguments
+try:
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], "hVH:u:p:w:c:v", ["help", "output="])
+    except getopt.GetoptError, err:
+        # print help information and exit:
+        raise Usage(err)
+except Usage, err:
+    print >>sys.stderr, err.msg
+    usage()
+    sys.exit(STATE_UNKNOWN)
+
+
+# gather values from given parameter switches
+for o, a in opts:
+        if o == "-w":
+            unreadWARNING = int(a)
+        elif o == "-c":
+            unreadCRITICAL = int(a)
+        elif o == "-u":
+            gmailUser = a
+        elif o == "-p":
+            gmailPassword = a
+        elif o in ("-V","-v","--version"):
+            print scriptName + " " + scriptVersion
+            usage()
+            sys.exit()
+        elif o in ("-h", "--help"):
+            detailedUsage()
+            sys.exit()
+        else:
+            assert False, "unhandled option"
+
+# Check to see if a host has been specified, throw an error if not.
+if gmailUser=="":
+    print "Error: no gmail user specified."
+    usage()
+    sys.exit()
+elif gmailPassword=="":
+	print "Error: no gmail password specified."
+	usage()
+	sys.exit()
+elif unreadWARNING=="":
+	print "Error: no unread WARNING threshhold specified."
+	usage()
+	sys.exit()
+elif unreadCRITICAL=="":
+	print "Error: no unread CRITICAL threshold specified."
+	usage()
+	sys.exit()
+
+
+# open an SSL imap4 connection to gmail, fail if unsuccessful
+try:
+    # Open imap4 conection to imap.gmail.com.
+	gmailconnection = imaplib.IMAP4_SSL('imap.gmail.com',993)
+
+except Exception:
+    print "UNKNOWN: error connecting to imap.gmail.com on tcp port 993"
+    sys.exit(3)
+
+# try to use the gmail login on the newly opened imap connection, fail if unsuccessful
+try:
+    # log in with gmail account and password
+	gmailconnection.login(gmailUser,gmailPassword)
+
+except Exception:
+    print "UKNOWN: error authenticating against opened gmail imap connection with provided credentials"
+    sys.exit(3)
+
+# attempt to count the unread emails for this gmail account now that we've logged in
+try:
+    # log in with gmail account and password
+	gmailconnection.select()
+	unreadEmailCount=int(len(gmailconnection.search(None, 'UnSeen')[1][0].split()))
+
+except Exception:
+    print "UKNOWN: error reading number of unread emails for gmail account %s" % gmailUser
+    sys.exit(3)
+
+
+# check the response time of the url
+if unreadEmailCount >= unreadCRITICAL:
+    checkResult="CRITICAL"
+    nagiosState=STATE_CRITICAL
+elif unreadEmailCount >= unreadWARNING:
+    checkResult="WARNING"
+    nagiosState=STATE_WARNING
+else:
+    # otherwise it's ok
+    checkResult="OK"
+    nagiosState=STATE_OK
+    
+# display output of the metrics and any warnings
+print "Unread email count for %s is %d: %s" % (gmailUser, unreadEmailCount, checkResult)
+sys.exit(nagiosState)