(PowerShell) Get a List of Message IDs in GMail User's Mailbox

Demonstrates how to get a list of message IDs in a GMail mailbox. The "userId" can be either the user's email address or the special value "me" to indicate the authenticated user.

For more information, see https://developers.google.com/gmail/api/v1/reference/users/messages/list

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = New-Object Chilkat.Http

$http.AuthToken = "ACCESS_TOKEN"

$http.Accept = "application/json"

$resp = $http.QuickRequest("GET","https://www.googleapis.com/gmail/v1/users/userId/messages")
if ($http.LastMethodSuccess -ne $true) {
    $($http.LastErrorText)
    exit
}

$("Response Status Code: " + $resp.StatusCode)

$jsonResponse = New-Object Chilkat.JsonObject
$jsonResponse.Load($resp.BodyStr)
$jsonResponse.EmitCompact = $false
$($jsonResponse.Emit())

if ($resp.StatusCode -ne 200) {
    $("Failed.")

    exit
}

# {
#   "messages": [
#     users.messages Resource
#   ],
#   "nextPageToken": string,
#   "resultSizeEstimate": unsigned integer
# }

$resultSizeEstimate = $jsonResponse.IntOf("resultSizeEstimate")
$i = 0
$count_i = $jsonResponse.SizeOfArray("messages")
while ($i -lt $count_i) {
    $jsonResponse.I = $i
    $id = $jsonResponse.StringOf("messages[i].id")
    $threadId = $jsonResponse.StringOf("messages[i].threadId")
    $i = $i + 1
}