test

 $body = @{

    client_id = "0b80c03e-de45-43c7-be0a-1e1adc86d792"
    client_secret = "fmt8Q~4nG1JrM50nipPp0YMdBpr.RXnAWagYsbRJ"
    scope = "https://graph.microsoft.com/.default"
    grant_type = "client_credentials"
}
$tokenResponse = Invoke-RestMethod -Uri "https://login.microsoftonline.com/bb55f134-02f1-478e-bc6a-82bf54373c6d/oauth2/v2.0/token" -Method POST -Body $body
$token = $tokenResponse.access_token

$mailBody = @{
    message = @{
        subject = "Test Email from GraphAPI_Flow"
        body = @{
            contentType = "Text"
            content = "This is a test email sent via Microsoft Graph API from Power Automate Desktop."
        }
        toRecipients = @(
            @{ emailAddress = @{ address = "sreekanth@vkn2k.onmicrosoft.com" } }
        )
    }
} | ConvertTo-Json -Depth 10

$headers = @{
    Authorization = "Bearer $token"
    "Content-Type" = "application/json"
}

$sendResult = Invoke-RestMethod -Uri "https://graph.microsoft.com/v1.0/users/sreekanth@vkn2k.onmicrosoft.com/sendMail" -Method POST -Headers $headers -Body $mailBody -ContentType "application/json"
Write-Output "Email sent successfully"