(VB.NET) Insert Email into GMail Folder

Directly inserts a message into only this user's mailbox similar to IMAP APPEND, bypassing most scanning and classification. Does not send a message.

This example will create a Chilkat Email object and upload/insert it into GMail. Then adds the "INBOX" label to the email to make it appear in INBOX

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Dim email As New Chilkat.Email

' This example chooses to load an email from a file.
Dim success As Boolean = email.LoadEml("qa_data/eml/testEmail.eml")
If (success <> True) Then
    Debug.WriteLine(email.LastErrorText)
    Exit Sub
End If


' Get the email as MIME.
Dim sbMime As New Chilkat.StringBuilder
email.GetMimeSb(sbMime)

Dim http As New Chilkat.Http
http.AuthToken = "GMAIL-ACCESS-TOKEN"

' Upload to GMail (does not send, but just inserts).

' IMPORTANT: After uploading/inserting, you won't see the message in the Inbox.
' In your web browser, if you go to "All Mail", you will see it.

Dim url As String = "https://www.googleapis.com/upload/gmail/v1/users/me/messages?uploadType=media"
Dim sendGzipped As Boolean = True
Dim resp As Chilkat.HttpResponse = http.PTextSb("POST",url,sbMime,"utf-8","message/rfc822",False,sendGzipped)
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' A status code of 200 indicates success.
Debug.WriteLine("Response status code: " & resp.StatusCode)
Debug.WriteLine("Response body:")
Debug.WriteLine(resp.BodyStr)

' The response body contains JSON.
' A sample successful JSON response:

' {
'  "id": "166f583051d36144",
'  "threadId": "166f5529e079a456"
' }

Dim json As New Chilkat.JsonObject
json.Load(resp.BodyStr)
Dim id As String = json.StringOf("id")



' Add the Inbox label to the inserted email so that it appears in Inbox.
Debug.WriteLine("---- Adding the Inbox label to the newly inserted email. ----")


' Create the following JSON to be sent in a POST to modify labels for this message.
' {
'   "addLabelIds": [
'     "INBOX"
'     ]
' }

Dim json2 As New Chilkat.JsonObject
json2.UpdateString("addLabelIds[0]","INBOX")

http.SetUrlVar("id",id)
url = "https://www.googleapis.com/gmail/v1/users/me/messages/{$id}/modify"

resp = http.PostJson3(url,"application/json",json2)
If (http.LastMethodSuccess <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' A status code of 200 indicates success.
Debug.WriteLine("Response status code: " & resp.StatusCode)
Debug.WriteLine("Response body:")
Debug.WriteLine(resp.BodyStr)

' The response body contains JSON.
' A sample successful JSON response:

' {
'  "id": "166f583051d36144",
'  "threadId": "166f583051d36144",
'  "labelIds": [
'   "INBOX"
'  ]
' }