We haven't received reports about the undelivered invoices error. Sometimes, this behavior can be caused by a browser hang-up. Let's do some troubleshooting steps to rule this out.
Open an incognito or private browser. This mode doesn't save your browsing history, cookies, site data, or information entered in forms.
Here are the keyboard shortcuts:
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Safari: Command + Option + P
Then, sign in to your QuickBooks Online account and try to send the invoices. If it's successful, go back to your regular browser and clear its cache. Restart your browser afterwards. Alternatively, try using a different supported browser.
Please let me know in the comments below how it goes after trying out the steps. I'm here to help you out again. Stay safe.
I have already tried using incognito mode already and continue to get this error message for all of the clients I am trying to send invoices to. I have also cleared my caches and tried both chrome and safari browsers.
Thank you for looking into this for me. I have tried to use the incognito mode and continue to get the undeliverable error message. I have also cleared my caches, and tried both chrome and safari browsers to no avail.
However, if the email address entered is correct and no temporary issue with the recipient;s email server. I recommend contacting our Customer Care Team. They can further check what's causing this behavior and might report it to our engineers.
To contact our support, here's how:
Go to the Help icon.
Select Talk to a human.
Enter "Talk to a human" again in the search bar.
Select I still need a human, then click Contact us.
Choose a way to connect with us.
Take note to make sure you can get connected to our support team on time. You can reach them every Monday to Friday from 6: 00 AM PST to 6:00 PM PST. Then, until 3:00 PM PST every Saturday.
You can always get back to me if you have questions or other concerns by leaving a comment below. I'm always here to assist. Have a great rest of the day.