This tutorial goes through the step by step process I use when I'm writing a new PowerShell script, using the example of a bulk mail contacts import script.
Walk-Through of Building a New PowerShell Script
Tag: Exchange
PowerShell Script to Import Mail Contacts from a CSV File to Exchange
Import-MailContactsFromCSV.ps1 is a PowerShell script to automate the creation of Exchange mail contacts using a CSV file for input.