Since Tryton use mailing, doing a test mailing could depends on some variables, like
- Credentials
- SMTP Server
- Server configuration
- Firewall configuration
And having mail configuration already set is not always the final solution, could be good having a mail testing module to test mail sending configuration working right
https://kallithea.connecttix.pe/trytonperu/mail_tester
We have this module working for thest mail configuration test
Bests