I cannot believe QB hasn't made this happen yet. There are initial requests from 2019. QB needs to have an option where there is a default attachment that is automatically added to estimates and invoices! Or at least a separate terms/conditions page. Or allowing the customer to accept the estimate rather than having to use a 3rd party app. It amazes me how such a huge company as QB/Intuit, they can't seem to grasp what customers actually want and need. And even when multiple people ask for it, they take ages to implement it, or not even do anything at all. You would think they would compile a list of possible functions/upgrades, send out an email poll, and get some traction of interest from everyone else.