(Xojo Plugin) Send GMail using REST API

See more GMail REST API Examples

Demonstrates how to send an email using the GMail REST API.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim success As Boolean

// Use the Chilkat Email API to create or load an email.
Dim email As New Chilkat.Email

// The From name/address don't need to be specified. 
// GMail will automatically use your Gmail address if the following 2 lines are omitted.
email.FromName = "My Name"
email.FromAddress = "my_account_name@gmail.com"

success = email.AddTo("John Smith","somebody@somewhere.com")
// To add more recipients, make additional calls to AddTo or AddCC, one per recipient...

email.Subject = "This is a test GMail email created using Chilkat."
email.Charset = "utf-8"
success = email.AddPlainTextAlternativeBody("This is a test")

// Create an HTML email body with an embedded image.
Dim cid As String
cid = email.AddRelatedFile("qa_data/jpg/starfish.jpg")
Dim sbHtml As New Chilkat.StringBuilder
success = sbHtml.Append("<html><body>This is a <b>test</b><br><img src=""cid:STARFISH_CID""/></body></html>")
Dim numReplacements As Int32
numReplacements = sbHtml.Replace("STARFISH_CID",cid)

success = email.AddHtmlAlternativeBody(sbHtml.GetAsString())

// OK.. we now have an HTML email with an embedded JPG image
// We'll need to get the full MIME of the email encoded to a base64url string.
Dim sbMime As New Chilkat.StringBuilder
success = email.GetMimeSb(sbMime)
success = sbMime.Encode("base64url","utf-8")

// The body of the HTTP request will be JSON..
Dim json As New Chilkat.JsonObject
success = json.UpdateSb("raw",sbMime)

// Send the email...
Dim http As New Chilkat.Http
http.AuthToken = "GMAIL-ACCESS-TOKEN"

Dim url As String
url = "https://www.googleapis.com/gmail/v1/users/me/messages/send"
Dim resp As Chilkat.HttpResponse
resp = http.PostJson3(url,"application/json",json)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

// A status code of 200 indicates success.
System.DebugLog("Response status code: " + Str(resp.StatusCode))
System.DebugLog("Response body:")
System.DebugLog(resp.BodyStr)

// The response body contains JSON.
// Use the online tool at Generate JSON Parsing Code
// to generate JSON parsing code.

// A sample successful JSON response:

// {
//  "id": "166f0d4ac39e50bf",
//  "threadId": "166f0d4ac39e50bf",
//  "labelIds": [
//   "SENT"
//  ]
// }