Good day, alex58.
As of the moment, the only means of sending invoices to your customer is through email. I definitely understand the how SMS feature would make your task easier and more efficient. Most of our product updates are based on the request that we received from our customers. Rest assured, I'll share this feedback with our product engineers for consideration.
For now, you can go the Apps menu or QuickBooks App Center. There might be a third-party app that can help you in sending your invoices through SMS.
Here's how:
- Select Apps from the sidebar menu.
- Click the Find the right app to filter results.
I also encourage you to visit the QuickBooks Blog to stay current with our product updates.
Please don't think twice to post again on this thread if you have further questions or any other concerns. I'll always have your back.