Ruby

GMail SMTP Send using Previously Obtained OAuth2 Access Token

See more GMail SMTP/IMAP/POP Examples

Demonstrates how to send email using GMail and OAuth2 authentication. This example assumes an OAuth2 access token was previously obtained. Ruby

require 'chilkat'

success = false

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

# See Get GMail SMTP Access Token 
# for sample code showing how to obtain a GMail SMTP access token for desktop apps.

# In this example, our access token was previously saved to the following file which contains JSON like this:
# 	{
# 	 "access_token": "ya39.Ci-XA_C5bGgRDC3UaD-h0_NeL-DVIQnI2gHtBBBHkZzrwlARkwX6R3O0PCDEzRlfaQ",
# 	 "token_type": "Bearer",
# 	 "expires_in": 3600,
# 	 "refresh_token": "1/r_2c_7jddspcdfesrrfKqfXtqo08D6Q-gUU0DsdfVMsx0c"
# 	}
# 
json = Chilkat::CkJsonObject.new()
success = json.LoadFile("qa_data/tokens/_gmailSmtp.json")
if (success != true)
    print "Failed to load GMail access token file." + "\n";
    exit
end

accessToken = json.stringOf("access_token")

mailman = Chilkat::CkMailMan.new()

# Set the properties for the GMail SMTP server:
mailman.put_SmtpHost("smtp.gmail.com")
mailman.put_SmtpPort(587)
mailman.put_StartTLS(true)

# The SMTP username should be the GMail address of the user's account that authorized your app to send email.
mailman.put_SmtpUsername("chilkat.support@gmail.com")
mailman.put_OAuth2AccessToken(accessToken)

# Create a new email object
email = Chilkat::CkEmail.new()

email.put_Subject("This is a test")
email.put_Body("This is a test")
email.put_From("Chilkat <chilkat.support@gmail.com>")
email.AddTo("Chilkat Admin","admin@chilkatsoft.com")
# To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

# Call SendEmail to connect to the SMTP server and send.
# The connection (i.e. session) to the SMTP server remains
# open so that subsequent SendEmail calls may use the
# same connection.  
success = mailman.SendEmail(email)
if (success != true)
    print mailman.lastErrorText() + "\n";
    exit
end

# You may close the connection here.  If the connection is kept open, 
# the next call to mailman.SendEmail will continue using the already-established connection
# (and automatically re-connect if needed).
success = mailman.CloseSmtpConnection()
if (success != true)
    print "Connection to SMTP server not closed cleanly." + "\n";
end

print "Email Sent via GMail with OAuth2 authentication." + "\n";