(PowerShell) Download a Specific GMail Message into a Chilkat Email Object

Demonstrates how to download a GMail message into a Chilkat Email object.

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 = "GMAIL-ACCESS-TOKEN"

# The id of the GMail message to download.
$id = "166e50fed0b9b0cb"
$userId = "me"

$http.SetUrlVar("userId","me")
$http.SetUrlVar("id",$id)

# Fetch the email.
$url = "https://www.googleapis.com/gmail/v1/users/{$userId}/messages/{$id}?format=raw"
$sbJson = New-Object Chilkat.StringBuilder
$success = $http.DownloadSb($url,"utf-8",$sbJson)
if ($success -ne $true) {
    $($http.LastErrorText)
    exit
}

$json = New-Object Chilkat.JsonObject
$json.LoadSb($sbJson)
$json.EmitCompact = $false

if ($http.LastStatus -ne 200) {
    $($json.Emit())
    $("Failed.")
    exit
}

# The returned JSON contains something like this:

# {
#   "id": "166e50fed0b9b0cb",
#   "threadId": "166e50fed0b9b0cb",
#   "labelIds": [
#     "CATEGORY_SOCIAL",
#     "INBOX"
#   ],
#   "snippet": "...",
#   "historyId": "582477",
#   "internalDate": "1541441317000",
#   "sizeEstimate": 28603,
#   "raw": "BASE64URL_CONTENT"
# }

# The RFC822 MIME of the email is contained in the "raw" as a base64URL encoded string.
# Let's decode and load into a Chilkat email object..
$sbRaw = New-Object Chilkat.StringBuilder
$json.StringOfSb("raw",$sbRaw)
$sbRaw.Decode("base64url","utf-8")

$email = New-Object Chilkat.Email
$email.SetFromMimeSb($sbRaw)

# Now we can use the email API to do whatever we desire..
$("From: " + $email.FromAddress)
$("Subject: " + $email.Subject)
# ...