$target = "C:tempmessages.csv"
#Connect-MsolService
$cred = Get-Credential
$jsonPayload = (@{userName=$cred.username;password=$cred.GetNetworkCredential().password;} | convertto-json).tostring()
$cookie = (invoke-restmethod -contenttype "application/json" -method Post -uri "https://api.admin.microsoftonline.com/shdtenantcommunications.svc/Register" -body $jsonPayload).RegistrationCookie
$jsonPayload = (@{lastCookie=$cookie;locale="en-US";preferredEventTypes=@(2)} | convertto-json).tostring()
$events = (invoke-restmethod -contenttype "application/json" -method Post -uri "https://api.admin.microsoftonline.com/shdtenantcommunications.svc/GetEvents" -body $jsonPayload)
$events.Events | export-csv -LiteralPath $target -NoTypeInformation