https://hellokoding.com/sending-email-through-gmail-smtp-server-with-java-mail-api-and-oauth-2-authorization/

• JDK 1.7+
• Maven 3+
• OAuth Access Token of your Google Account. Check out more details on How to get the access token at OAuth2DotPyRunThrough

• Java Mail API
• OAuth2 Authorization Flow

mvn clean package exec:java -Dexec.args="{FROM_USER_NAME} {FROM_USER_FULLNAME} {FROM_USER_ACCESSTOKEN} {TO_USER_EMAIL}"