ReadOnly permission to multiple mailboxes

Question

Hi,
I am trying to apply read only permission to 500 mailboxes. I am using the bellow script to apply the permission.
.\ReadOnly_Permission.ps1 -Mailbox Test@test .com -User Test -Access reviewer

Can anyone help me figure out how to apply permission for all 500 users? Does the script below work?
Import-csv “”| {.\ReadOnly_Permission.ps1 -Mailbox $.mbx -User $.user -Access reviewer
}
37496-readonly-permission.txt

Answer 1

@Austin Sundar
You can take step below to running script for multiple mailboxes:

1. Put CSV file and script in the same folder.
   
2. Create a new .PS1 file contains script below: $users = Import-Csv c:/temp/users.csv

    foreach ($user in $users){  
        .\ReadOnly_Permission.ps1 -Mailbox $user.mailbox -User $user.user -Access reviewer  
    }  
   

3) Switch EMS to this folder location and running the second script:

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