javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted

Question

I am getting this error when I try to send mail using the JavaMail API:

javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accept         


        

Answer 1

This worked for me:

1. Login to the gmail account you are sending mail from
2. Go to Manage your Google Account -> Security -> Less secure app access -> Turn on access (not recommended)
   or
   Access the URL:
   https://www.google.com/settings/security/lesssecureapps
3. Turn "Allow less secure apps: OFF" to "Allow less secure apps: ON"

Answer 2

I have the same error but when I run the app from the terminal, it goes away. My email configuration is provided:

spring.mail.host=smtp.googlemail.com
spring.mail.username=weddingcard9999@gmail.com
spring.mail.password=Weddingcard.1
spring.mail.port=587
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.required=true

Answer 3

It works for me, you must configure your Gmail account with the below steps:

In the security section:

You need to Change "Allow less secure apps: OFF" to "Allow less secure apps: ON"

Answer 4

Log on gmail account, in Account ->

click Security -> turn off 2-step verification and turn on "Less secure app access"

May be because of things above, hope help you