{"id":450,"date":"2018-03-21T00:38:57","date_gmt":"2018-03-21T00:38:57","guid":{"rendered":"http:\/\/kevinmichaelcoy.com\/blog\/?p=450"},"modified":"2018-03-21T01:00:59","modified_gmt":"2018-03-21T01:00:59","slug":"sending-email-via-gmail-with-2-step-authentication-from-angularjs-frontend-to-spring-boot-backend","status":"publish","type":"post","link":"http:\/\/kevinmichaelcoy.com\/blog\/2018\/03\/21\/sending-email-via-gmail-with-2-step-authentication-from-angularjs-frontend-to-spring-boot-backend\/","title":{"rendered":"Sending Email via Gmail with 2-Step Authentication from AngularJS Frontend to Spring Boot Backend"},"content":{"rendered":"
\"Sending

Sending Email via Gmail with 2-Step Authentication from AngularJS Frontend to Spring Boot Backend<\/p><\/div>\n

In this tutorial, I’ll show you how to configure Spring Boot to set up a REST Controller to send emails via Gmail. Plus, if you have 2-Step Authentication set up, which you should if you don’t, then I’ll take you through a couple extra steps. Then, I’ll show you how you can tie everything together with a frontend written in AngularJS 1.6.<\/p>\n

Firstly, make sure you have your Spring Boot application’s Maven POM configured correctly:<\/p>\n

[code language=”xml”]
\n\t<dependencies>
\n …
\n\t\t<dependency>
\n\t\t\t<groupId>org.springframework.boot<\/groupId>
\n\t\t\t<artifactId>spring-boot-starter-mail<\/artifactId>
\n\t\t<\/dependency>
\n …
\n\t<\/dependencies>
\n[\/code]<\/p>\n

Now, you need to configure your application.properties<\/code>. This is what needs to be added:<\/p>\n

[code language=”bash”]
\nspring.mail.host=smtp.gmail.com
\nspring.mail.port=587
\nspring.mail.username=testing123@gmail.com
\nspring.mail.password=abcdef123456
\nspring.mail.properties.mail.smtp.auth=true
\nspring.mail.properties.mail.smtp.starttls.enable=true
\n[\/code]<\/p>\n

Of course, you will need to substitute your actual email address and your actual password to your Gmail account. Now, if you have 2-Step Authentication (ie, 2-Step Verification) configured on your Gmail account, you will need to create an application specific password. If you do not, you will see an error like the following:<\/p>\n

[code language=”bash”]
\n{
\n"timestamp": 1521418235937,
\n"status": 500,
\n"error": "Internal Server Error",
\n"exception": "org.springframework.mail.MailAuthenticationException",
\n"message": "Authentication failed; nested exception is javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted. Learn more at\\n535 5.7.8 https:\/\/support.google.com\/mail\/?p=BadCredentials i79sm6827128qkh.11 – gsmtp\\n",
\n"path": "\/email\/"
\n}
\n[\/code]<\/p>\n

With that warning in place, lets just go ahead and mitigate ever seeing the aforementioned issue by creating an application specific password. Please go to the following page to create one:<\/p>\n