Ruby
Send GMail using REST API

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

Ruby
require 'chilkat'

success = false

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

# Use the Chilkat Email API to create or load an email.
email = Chilkat::CkEmail.new()

# 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.put_FromName("My Name")
email.put_FromAddress("my_account_name@gmail.com")

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

email.put_Subject("This is a test GMail email created using Chilkat.")
email.put_Charset("utf-8")
email.AddPlainTextAlternativeBody("This is a test")

# Create an HTML email body with an embedded image.
cid = email.addRelatedFile("qa_data/jpg/starfish.jpg")
sbHtml = Chilkat::CkStringBuilder.new()
sbHtml.Append("<html><body>This is a <b>test</b><br><img src=\"cid:STARFISH_CID\"/></body></html>")
numReplacements = sbHtml.Replace("STARFISH_CID",cid)

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.
sbMime = Chilkat::CkStringBuilder.new()
email.GetMimeSb(sbMime)
sbMime.Encode("base64url","utf-8")

# The body of the HTTP request will be JSON..
json = Chilkat::CkJsonObject.new()
json.UpdateSb("raw",sbMime)

# Send the email...
http = Chilkat::CkHttp.new()
http.put_AuthToken("GMAIL-ACCESS-TOKEN")

url = "https://www.googleapis.com/gmail/v1/users/me/messages/send"
resp = Chilkat::CkHttpResponse.new()
success = http.HttpJson("POST",url,json,"application/json",resp)
if (success == false)
    print http.lastErrorText() + "\n";
    exit
end

# A status code of 200 indicates success.
print "Response status code: " + resp.get_StatusCode().to_s() + "\n";
print "Response body:" + "\n";
print resp.bodyStr() + "\n";

# 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"
#  ]
# }