I sent an invoice but both of them didnt go through because quickbooks didint accept the emails

I'll ensure you can send invoices seamlessly, Iris. Let me share relevant troubleshooting to address issues that prevent you from achieving your goal.

QuickBooks Online uses cache files to run faster, which can get corrupted as time passes. This can cause unexpected behavior when navigating the program, including the inability to recognize emails when attempting to send invoices.

To get this resolved, please access your company through a private window to avoid interruptions from outdated data. You can 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, clear your regular browser's cache to refresh your website's preference. Also, kindly ensure it's supported and updated for the most secure and best experience.

Moreover, refer to this material for guidance on recording customer payments to keep your account balanced: Record invoice payments in QuickBooks.

You can revert to this conversation whenever you have inquiries regarding sending and managing invoices in QuickBooks Online. I'm always equipped with information that can address any of your concerns.