Scenario: you have your own domain and have setup an email address in your server using, say, roundcube. Now, you want to send emails using a reliable free third party SMTP relay.
What steps you need to follow to use Gmail SMTP?
- You have to have postfix installed in your server. This post will show you how to configure postfix to use Gmail SMTP relay. But you to remember that Gmail put limit of how many emails you can send using their relay. If your service needs to sends thousands of email per day, you may considering buying third party SMTP relay service.
- Configure the Gmail account.