How to Connect to Exchange Online Using Remote PowerShell. 
Adding a Domain and Bulk Modifying Email Addresses.
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1. Add a Domain to Office 365.


2. Connect to Exchange Online. Edit the PowerShell profile to automate the process.

# Check whether you have a CurrentUserCurrentHost PS profile:

Test-Path $PROFILE.CurrentUserCurrentHost

# and if there isn't one, create it:

new-item $PROFILE.CurrentUserCurrentHost -ItemType file -Force

# Automate the Remote PS to Office 365 and Exchange online

Import-Module MSOnline

$msolcred = get-credential

connect-msolservice -credential $msolcred  



$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $msolcred -Authentication Basic -AllowRedirection

Import-PSSession $Session


3. Get a list of the user accounts and export it to a CSV file.

Get-MsolUser | select UserPrincipalName, FirstName, LastName

Get-MsolUser | select UserPrincipalName, FirstName, LastName | Export-Csv NetoMeter-Users.csv


4. Bulk Modify UserPrincipalName.