Use SMTP send gmail

• smtp.gmail.com
• username/password: [email protected]/password
• port: 587 TLS, 465 SSL

Warning

Remember to turn on "Allow less secure apps" in https://myaccount.google.com/security#connectedapps

References

https://kinsta.com/blog/gmail-smtp-server/

https://stackoverflow.com/questions/33939393/failed-to-authenticate-on-smtp-server-error-using-gmail