Simple Mail Client Application using SMTP and Java Mail library (only Gmail tested)
Note: if you want you use the outbox you need the change label which is "[Gmail]/Gönderilmiş Postalar" in Outbox.java
You need to translate it into your language. for example [Gmail]Outbox (I don't know if Outbox label works, maybe 'sent mails' works, I don't know.)
inspired and used codes from:
https://pepipost.com/tutorials/send-email-in-java-using-gmail-smtp/ https://www.tutorialspoint.com/javamail_api/javamail_api_fetching_emails.htm