Powershell script for communicating a list of credentials to users by email. Beware these credentials are therefore communicated in plain text.

Send-Credentials.ps1

[CmdletBinding()]
Param(
    [CmdletBinding(SupportsShouldProcess = $true)]
    $Inputfile
)

Import-CSV Credentials.csv | ForEach-Object {

    $Body = "Dear $($_.GivenName),
    
Please find your credentials below:
    
Account name: $($_.AccountName)
Password: $($_.Password)
    
Regards,
YourName"

    If ($PSCmdlet.ShouldProcess("$($_.EmailAddress)","Send email with credentials")){
        Write-Progress -Activity "Sending credentials by email" -Status "Sending credentials to $($_.EmailAddress)"
        Send-MailMessage -To $_.EmailAddress -From "donotreply@yourdomain.com" -SmtpServer "mail.yourdomain.com" -Subject "Credentials for $($_.GivenName)" -Body $Body
    }

}