
I use to be able to email invoices from QB desktop using the option "web mail" under preferences and send forms option. Using QB Pro2020 and AOL as my email client. Keep me posted on how this goes on your end.

Under My Preferences tab, select the email account you're using.Once done, check the web mail's settings in the preferences. To isolate the issue, let's ensure that your QuickBooks Point of Sale is updated to the latest release. Account security settings from your email provider.The email preference being set incorrectly.

There are some possible reasons why you're unable to send an invoice via email.
