I can see how the benefit of being able to send invoices using other email domains (aside from Gmail) would aid you in managing your transactions with QuickBooks Online (QBO), @Virdual. That's why I'm here to share a few details about this.

For the time being, we’re unable to provide you with a specific time frame as to when this option of sending sales transactions using other domains be implemented. We take customer suggestions as opportunities to improve the various features within our products. Therefore, I would encourage you to send suggestions or product recommendations.

Your valuable feedback will be forwarded and reviewed by our Product Development team to help improve your experience while using the program. Here's how:

1. Go to the Gear icon.
2. Select Feedback.
3. Type in your recommendation in the Share your feedback field.
4. Click Next.
5. Follow the on-screen instructions to complete the process.

I've attached screenshots below that show the first four steps.

Also, to learn more about personalizing your sales forms and recording your invoice payments in QBO, I'd recommend checking out these articles:

• Customize invoices, estimates, and sales receipts in QuickBooks Online
• Record invoice payments in QuickBooks Online

On top of that, I'd also recommend visiting this page to keep you updated with the latest software improvements and enhancements with QBO: Customer Feedback for QuickBooks Online.

I'm all ears if you have other concerns about managing invoices and sales transactions in QBO. You can drop a comment below, and I'll gladly help. Take care, and I wish you continued success, @Virdual.