Hi my invoicing was working just fine but all of a sudden sending via email is failing can someone please advise ?

I'm here to help you resolve this invoicing issue, marketing-iris-h.

Before we start, did you receive an error message when attempting to send the invoice? Any details will help me provide an accurate and timely solution.

In the meantime, please check if the email address is valid. Once confirmed and the issue persists, let's open your QuickBooks account using an incognito or private browser. Some settings might not apply correctly when a browser's cache is full or corrupted. 

Here are the keyboard shortcut keys: 

• Ctrl + Shift + N  for Google Chrome
• Ctrl + Shift + P for Firefox
• Control + Option +P if you're using Safari

Check if you can now send the invoice without issue. If so, go back to the regular browser and clear the cache. This removes any cache data preventing your settings from being applied correctly. Alternatively, use another supported browser.

Furthermore, I'm sharing this article with solutions if customers still need to receive your email: 3 solutions for you when customers don't receive your emails.

Let me know if you have other questions. I'm still available to assist.