To send SMTP with Magento Ecommerce you will need to download our Custom SMTP for Magento2
Log into your Magento 2 Admin
Simple Mail Transfer Protocol (SMTP) allows your Magento 2 store to send email through a specific third-party mail SMTP server. You can configure your Magento store to use your Gmail, Amazon, Microsoft or any other mail server account to send all your emails. All you need is to configure the mail server settings in our Magento extension.