How can I send an invoice to a client?

I appreciate you posting your invoice concern in the forum, nestormtz.

I'll ensure you can seamlessly send your transaction so you can keep going with your different business tasks.

Before anything else, can you provide us with the specific error that stops you from sending the invoice successfully? This way, we can provide the most appropriate resolution.

On the other hand, most of the reason why sending an invoice fails is an incorrect email address. Hence, let's check if you're using the correct customer's contact information.

Here's how: 

1. Proceed to Customers & Leads, then Customers.
2. Select the customer you're trying to send an invoice.
3. Review the email address from the Customer Details tab.
4. If necessary, click on the Edit option from the upper right corner.
5. Click on Save to update changes.
6. Resend the invoice.

If the customer's email is correct, consider checking your email address.

Moreover, if the issue persists, you can utilize a private window to help avoid discrepancies related to your browser's cache. Please refer to these keyboard shortcuts:

• Google Chrome: Ctrl + Shift + N
• Safari 11 or newer: ⌘ + Shift + N
• Mozilla Firefox: Shift + Ctrl + P
• Microsoft Edge: Ctrl + Shift + N

Once it works, you can head to your regular browser and clear its cache to avoid unexpected behaviors. Also, use a supported and up-to-date browser for the best and most secure experience.

Furthermore, you might want to scan these resources to guide you on recording invoice payments and personalizing your sales forms: 

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

Don't hesitate to update us in the thread if you have additional questions about sending invoices or other related concerns in QuickBooks Online. You can always count on us.