######################################################################################
#To use this script, the properties of each active directory user must be populated with their mobile number.
#Under the properties of an a/d user there is the Telephones tab. The mobile field must contain the mobile number and in the correct format.
#For example if my carrier is verizon, I would use 1234567899@vtext.com.
#The first section defines authentication to the email server. The email field needs to be updated to reflect your environment.
#Don't declare a ‘to’ field, as it's used at the #end. Modify the from,body,sub,creduser,credpass,smtpserver,and port fields.
##
$From = "emergencytest@yourdomain.com
$Body = "This is a test of the WatchPoint emergency broadcast system. This is only a test."
$Sub = "Test of the WatchPoint emergency broadcast system"
$CredUser = "myuser@mydomain.com"
$CredPass = "password" | ConvertTo-SecureString -AsPlainText -Force
$Credentials = New-Object System.Management.Automation.Pscredential -Argumentlist $CredUser,$CredPass
$SmtpServer = "mail.mydomain.com"
$Port = "587"

#Declare the csv paths. The paths will need to be updated to reflect your environment.
##
$exportmembers = "C:\test\watchpointdata.csv"
$exportresults = "C:\test\results.csv"

#Replace “WatchPointData” with your distribution groups actual name. Keep the “”.
#This section collects all of the members that belong to our hidden distribution group and exports to a csv.
##
$members = get-adgroupmember "WatchPointData" | select-object -property "SamAccountName" | export-csv $exportmembers

#Nothing needs changed here. This section collects the name,login, and mobile phone number for each member of the group and is used in the next section.
##
Import-CSV -Path $exportmembers | ForEach-Object {
    Get-ADUser -Filter "SamAccountName -like '*$($_.SamAccountName)*'" -Properties MobilePhone,UserPrincipalName,Name | select Name,UserPrincipalName,MobilePhone
} | Export-CSV $exportresults -NoTypeInformation

#Nothing needs changed here. This section gathers just the "MobilePhone" number that we exported from the above section.
##
$textnumbers = import-csv $exportresults | % {$_.MobilePhone}

#Nothing needs to be changed here. This section sends an email as text to each user.
##
ForEach($cellnumber in $textnumbers)
 {
 Send-MailMessage -To $cellnumber -From $From -Body $Body -Subject $Sub -Credential $Credentials -SmtpServer $smtpServer -Port $Port
}
#End of Script