PowerShell

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. PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$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 = New-Object Chilkat.JsonObject
$success = $json.LoadFile("qa_data/tokens/_gmailSmtp.json")
if ($success -ne $true) {
    $("Failed to load GMail access token file.")
    exit
}

$accessToken = $json.StringOf("access_token")

$mailman = New-Object Chilkat.MailMan

# Set the properties for the GMail SMTP server:
$mailman.SmtpHost = "smtp.gmail.com"
$mailman.SmtpPort = 587
$mailman.StartTLS = $true

# The SMTP username should be the GMail address of the user's account that authorized your app to send email.
$mailman.SmtpUsername = "chilkat.support@gmail.com"
$mailman.OAuth2AccessToken = $accessToken

# Create a new email object
$email = New-Object Chilkat.Email

$email.Subject = "This is a test"
$email.Body = "This is a test"
$email.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 -ne $true) {
    $($mailman.LastErrorText)
    exit
}

# 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 -ne $true) {
    $("Connection to SMTP server not closed cleanly.")
}

$("Email Sent via GMail with OAuth2 authentication.")