Hi there, @Vinny6.
Are you getting any error messages when trying to send invoices? We have an ongoing investigation on invoice delivery issues in QuickBooks Online. Our engineers are doing their best to fix it as soon as possible.
If your email fails to deliver, I recommend contacting our Customer Care Support team so you'll be added to the list of affected users. This way, you'll receive email updates on the investigation's status and be notified once it's been resolved. I've included the steps to contact support below.
- Click the (?) Help icon in the upper right-hand corner of the dashboard.
- Select Talk to a Human.
- Enter a short description of your concern and press Enter.
- Click I still need a human.
- Select Contact Us to connect with our live support.
- Choose Get a callback.
In the meantime, you can download your forms as PDFs and send them via your email. Once the issue is fixed, you may also set up QBO to send invoices from your Gmail address.
I appreciate your patience as we work through this. If you have any other concerns, please don't hesitate to drop a comment below. Take care!