Hello @bpike,
Let's perform a few troubleshooting steps so you can send invoices to your customers without any issues.
To start with, let's install and make sure to download the latest released version of QuickBooks for Mac 2021. Let me show you how.
- Go to QuickBooks.
- Select Check for Updates.
- On the pop-up window, select Install Update.
- Click Install and Relaunch.
But if you still unable to completely set up webmail even after following the steps above, consider manually updating your product with the steps outlined in this article: How to keep QuickBooks for Mac up-to-date so you always have the latest features and fixes?
Additionally, I've also included this reference for a compilation of articles you can use while working with us: Help Articles - QuickBooks Desktop for Mac.
If you have any other questions, please let me know in the comments below. I'll be here to lend a hand.
