getting errors by sending email's

Let me assist you with your concern about sending emails in QuickBooks, @Mifal May1.

To start, let's ensure to update your QuickBooks so you'll have the latest features and fixes.

Then, Set up secure webmail. Here's how: 

1. Go to the QuickBooks Edit menu and then select Preferences.
2. Click Send Forms.
3. Select WebMail and Add.
4. Select your provider from the drop-down and enter your email address.
5. Select the Use Enhanced Security checkbox and select OK. 
6. When prompted, sign in to your Intuit account.
7. Your webmail provider's login page will display. Sign in and select to grant Intuit access.

After, set up your webmail to work with QuickBooks. Please refer to this article for detailed steps: Connect your email to QuickBooks Desktop

See this article just in case you're interested in sending forms by batch in QuickBooks Desktop.

Please let me know if you have other concerns. I'll be more than happy to help. Have a nice day ahead.