Hi There,
This script will help you to add members to a Distribution Lists (DL) from a CSV file
You just need a csv file with two columns: distribution list name (dlistname) and member (members)

You can also combine this script with another one to add members to DL (Distribution Lists) as well.
Testing the csv file:
Import-Csv .\create-dl.csv
You should see the following

PowerShell code
########################################################################################### # Author Thiago Beier thiago.beier@gmail.com # Version: 1.0 - 2020-FEB-28 # Adding user to a DL (Distribution List on Office 365) from CSV file # Toronto,CANADA # Email: thiago.beier@gmail.com # https://www.linkedin.com/in/tbeier/ # https://thigobeier.wordpress.com ########################################################################################### # Import-Csv .\add-members-to-dl01.csv | foreach { write-host "Adding user" $_.members "to" $_.dlistname "DL" -ForegroundColor Yellow Add-DistributionGroupMember -Identity $_.dlistname -Member $_.members }