My purchase orders go out from quickbooks e mail address how do i change this so it looks like they are coming from me? my invoices go out with my e mail address ok

Hello Coding Components, 

Welcome to the Community page,

There is no way of being able to change the email address, if your wanting it to show as your email address instead of Quickbooks, what you would need to do is email the purchase order to yourself then email it out to your customer from there. That is the only way round it.