To check that mail sending is properly configured, I request the feature to implement a “mail test” triggerer from admin interface, with a text box for a recipiento to send to.
As mail server configuration is done in trytond.conf, I think the testing should be done using a
trytond-admin option (indeed the
--reset-password option already send an email to the admin user).
If just filled Issue 8983: Allow to test email settings with trytond-admin - Tryton issue tracker with a patch that implements it