Hello to all

i want to disable email sending option for my testing purpose, but i installed purchase module for this "Unable to send email, please configure the sender's email address." message showing only for 2 options i.e. Purchase Orders, Requests for Quotation.

I want to disable mail sending option in short...for all module.

I am going to configure Userwise modulewise rights i give purhcase rights to puroperator. also i need detail step wise rights defiining in odoo like userwise/modulewise/fieldwise/authentication