Allow me to elaborate on some troubleshooting procedures and an alternative so your customers can continue receiving the invoices you've sent, tipsand.
To confirm, did you receive any error notification when sending the invoice? If so, can you please share the error code you've encountered? This way, we can provide a precise resolution for your concern.
Going back to your question, these are the reasons that can trigger this matter to occur:
- The invoices were marked as spam or junk messages on your customer's email.
- Your customer is using an outdated version.
- There's a typo in your customer's email.
Based on the factors above, you can follow these instructions to resolve the issue:
- Double-check your customer's email address on the invoice. You can also coordinate with them to verify this information.
- Let the customer review their email's Spam or Junk folders.
- Ensure your customer is using an updated browser.
Alternatively, you can export the invoice(s) as PDF and send it outside of QuickBooks so your customers can receive and pay them on time. Here's how:
- Go to the Invoices page.
- Modify the Status and Date fields, or use the Search section to locate the entry.
- Click the invoice's designated dropdown arrow under the Action.
- Select the Export as PDF option.

- Send the saved invoice pdf to your customer via email.
Furthermore, you may use your report in QuickBooks to fill in your income tax return. It can help you save time managing your deductions once your taxes are due.
We're still available once you provide more details about your concern or have additional questions about sending invoices from the platform. Just reply to this thread so we can assist you further.