1. Rename checkbox "Peppol BIS Billing 3.0" to "BIS Billing 3.0" to avoid confusion with the incoming one we will add with the full support of Peppol. 2. There was a buggy interaction between mail checkbox and BIS Billing checkbox in the Send & Print: If the Peppol BIS Billing was checked, then uncheck/check the Email box, the Peppol BIS Billing unchecks automatically. They should be independent. Task-id:3525932 closes odoo/odoo#137382 Related: odoo/enterprise#48318 Signed-off-by: Florian Gilbert (flg) <flg@odoo.com>