| ⇢ | B | mail::admin_mail_settings_common() added | |
| ⇢ | A | mail::admin_mail_get_settings() added | |
| ⇢ | A | mail::admin_mail_send_test_email() added | |
| ⇢ | A | mail::admin_mail_apply_settings() added | |
| ⇢ | A | mail::admin_mail_save_settings() added | |
| ⇢ | A | mail::admin_mail_cancel_settings() added | |
| C | ↘ | D | Controller::save() got worse |
| B | ↗ | A | users::users_mail() improved |
| A | ↛ | admin::admin_email_sending_test_get() removed |