The reason this is critical for us is that our invoices are sent to an Accounts Payable system. These systems require us to register our organization. I can't register our organization with a 3rd party email address. Our client might have a dozen vendors invoicing through Quickbooks and the system can't recognize which organization the invoice comes from when the "From" email has an intuit/quickbooks email domain.
The reason this is critical for us is that our invoices are sent to an Accounts Payable system. These systems require us to register our organization. I can't register our organization with a 3rd party email address. Our client might have a dozen vendors invoicing through Quickbooks and the system can't recognize which organization the invoice comes from when the "From" email has an intuit/quickbooks email domain.