Could not connect to SMTP host: smtp.gmail.com, port: 465, response: -1

Question

while sending mail I am getting this error

java.lang.RuntimeException: javax.mail.SendFailedException: Sending failed; nested exception is: cla

Answer 1

What i did was i commented out the

props.put("mail.smtp.starttls.enable","true"); 

Because apparently for G-mail you did not need it. Then if you haven't already done this you need to create an app password in G-mail for your program. I did that and it worked perfectly. Here this link will show you how: https://support.google.com/accounts/answer/185833.