This interactive script requires PowerShell 3.0 . It creates an Active Directory user and their corresponding mailbox using a remote session at the same time. It should work out of the box, but specific variables will have to be edited to reflect the Active Directory configuration of the organization in question.

function New-Employee {
Param ($firstName = (Read-Host "Enter FirstName"),
$lastName = (Read-Host "Enter LastName"),
$department = (Read-Host "Enter Department"),
$userPrincipalName =(Read-Host " Enter UserPrincipalName as FirstNameLastName@yourdomain.net"),
$name = "$firstName" +" " + "$lastName",
$sam = "$firstname" + "$lastname",
$alias = "$firstname" + "$lastname",
$initialpassword = (Read-Host " Enter Initial Password"),
$FromEmailAddress = (Read-Host " Enter From Email Address for Email Notification"),
$ToEmailAddress = (Read-Host " Enter To Email Address for Email Notification")
)
$initialgroups = 'Office','HeadOffice'
$whoami = whoami /upn
if ($department -eq "HR_OU") {
$OU = "OU=HR_OU,OU=Users-all,DC=yourdomain,dc=net"
New-ADUser -AccountPassword (convertto-securestring $initialpassword -asplaintext -force) -GivenName $firstname -SurName $lastname -UserPrincipalName $userprincipalname -Name $name -Enabled $true -Path $OU -Department $department -SamAccountName $Sam -ChangePasswordAtLogon $true
Add-ADPrincipalGroupMembership -Identity $sam -MemberOf $initialgroups
}Elseif
($department -eq "IT_OU") {
$OU = "OU=IT_OU,OU=Users-all,DC=yourdomain,dc=net"
New-ADUser -AccountPassword (convertto-securestring $initialpassword -asplaintext -force) -GivenName $firstname -SurName $lastname -UserPrincipalName $userprincipalname -Name $name -Enabled $true -Path $OU -Department $department -SamAccountName $Sam -ChangePasswordAtLogon $true
Add-ADPrincipalGroupMembership -Identity $sam -MemberOf $initialgroups
}Elseif
($department -eq "Marketing_OU") {
$OU = "OU=Marketing_OU,OU=Users-all,DC=yourdomain,dc=net"
New-ADUser -AccountPassword (convertto-securestring $initialpassword -asplaintext -force) -GivenName $firstname -SurName $lastname -UserPrincipalName $userprincipalname -Name $name -Enabled $true -Path $OU -Department $department -SamAccountName $Sam -ChangePasswordAtLogon $true
Add-ADPrincipalGroupMembership -Identity $sam -MemberOf $initialgroups
}Elseif
($department -eq "Production_OU") {
$OU = "OU=Production_OU,OU=Users-all,DC=yourdomain,dc=net"
New-ADUser -AccountPassword (convertto-securestring $initialpassword -asplaintext -force) -GivenName $firstname -SurName $lastname -UserPrincipalName $userprincipalname -Name $name -Enabled $true -Path $OU -Department $department -SamAccountName $Sam -ChangePasswordAtLogon $true
Add-ADPrincipalGroupMembership -Identity $sam -MemberOf $initialgroups
}Elseif
($department -eq "Accounting_OU") {
$OU = "OU=Accounting_OU,OU=Users-all,DC=yourdomain,dc=net"
New-ADUser -AccountPassword (convertto-securestring $initialpassword -asplaintext -force) -GivenName $firstname -SurName $lastname -UserPrincipalName $userprincipalname -Name $name -Enabled $true -Path $OU -Department $department -SamAccountName $Sam -ChangePasswordAtLogon $true
Add-ADPrincipalGroupMembership -Identity $sam -MemberOf $initialgroups
}

}
New-Employee


I hope someone finds this useful. An update to this script is available at this link .