Lua

SMTP GMail Send using App Password

See more GMail SMTP/IMAP/POP Examples

Demonstrates how to authenticate using an app password with GMail for SMTP (port 465 using implicit SSL/TLS). Lua

local chilkat = require("chilkat")

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

-- Starting May 30, 2022, Google will no longer support the use of third-party apps or devices
-- which ask you to sign in to your Google Account using only your username and password.

-- Instead of authenticating with your GMail username/password, a GMail user can create an App Password
-- and then login using their username/app_password.   It's literally the same, except it allows a GMail
-- account owner to isolate passwords to specific applications.

-- The Gmail account owner would first need to make sure she has 2-Step Verification setup for her account.
-- Note: The 2FA verification is not a factor when authenticating with an app password. The 2FA is required
-- to setup app passwords in the Google account console.  See Sign in with App Passwords

-- After the GMail account owner has setup his app password, he simply uses the app password instead of his GMail account password.

local mailman = chilkat.MailMan.new()

mailman.smtp_host = "smtp.gmail.com"

mailman.smtp_username = "user@gmail.com"
mailman.smtp_password = "srnyyvqajocnsvdp"

mailman.smtp_ssl = true
mailman.smtp_port = 465

local success = mailman:smtp_connect()
if not success then
    print(mailman.last_error_text)
    return
end

success = mailman:smtp_authenticate()
if not success then
    print(mailman.last_error_text)
    return
end

print("SMTP Success!")