JavaMail API : Username and Password not accepted (Gmail)

Question

I want to send email from my java application to gmail account I used the following code and javaMail API ,But Gmail not accepted username and password and exception thrown

Answer 1

You can try to allow unsecure applications, it worked for me.

Steps for Gmail account :

1. Sign in to Gmail
2. Click here to access Less Secure App Access in My Account.
3. Next to “Allow less secure apps: OFF,” select the toggle switch to turn ON.

See this link for Gmail and G-Suite.