This isn't the impression we want you to have, @info661.
I can see how important having the ability to use your own domain to send emails in QuickBooks Online (QBO) would be helpful for you and your business. That said, rest assured that I'll pass along your suggestion to our Product Developers. They're always looking for ideas to consider on how to improve QBO.
For now, I suggest visiting our Blog site. This is where we share recent happenings and future developments, such as updates to newly added features. Please refer to the link shared by my colleague above.
I also encourage you to visit this resource that will guide you in personalizing your sales forms: Customize invoices, estimates, and sales receipts in QBO.
As always, add a comment below if you have any other questions about customizing your own domain to send emails in QuickBooks. Take care.
