Why am I getting the Unable to send invoices in QuickBooks?

Experiencing difficulties while trying to send invoices in QuickBooks can be a frustrating issue. Several factors can contribute to this problem, including technical glitches, software conflicts, or issues with your email settings. If you encounter the “Unable to send invoices in QuickBookserror, such as emails not being sent or invoices getting stuck in the outbox, it may be due to an incorrect email configuration in QuickBooks or an issue with your email provider. Additionally, internet connectivity problems can disrupt the sending process. 

Resolving this issue requires carefully reviewing email settings, ensuring the email service functions correctly, and addressing any technical or network-related problems. Accurate and timely invoice delivery is crucial for maintaining financial transactions and client relationships, making it imperative to resolve these issues promptly. You can call us at (855)-955-1942 and get our team to help you fix this.

What can lead to the inability to send invoices in QuickBooks issue on your desktop?

To resolve this issue, verify your email settings, address software conflicts, ensure a stable internet connection, and update QuickBooks to the latest version. Several factors can lead to the “Unable to send invoices in QuickBooks” issue on your desktop.

  • Incorrect email settings or configurations in QuickBooks can prevent invoices from being sent.
  • Conflicts with other applications or security software can disrupt the emailing process.
  • Problems with your email provider, such as a full inbox or an inactive account, can cause sending failures.
  • Poor or unstable internet connectivity may result in email delivery problems.
  • Security software settings can block QuickBooks from sending emails.
  • Using an outdated version of QuickBooks may lead to compatibility issues with email services.
  • Damaged or corrupted QuickBooks program files can affect its functionality.

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Solving the problem of invoice issues on your device quickly and smoothly

Solution 1: You can try to make the changes to your email preferences in QB

Adjusting your email preferences in QuickBooks can address email-related issues and ensure smooth communication with your clients and customers.

  • Launch QuickBooks on your desktop. Click on the “Edit” menu at the top left corner of the QuickBooks window.
  • Choose “Preferences” from the dropdown menu. In the left panel, select “Send Forms.” Click on the “My Preferences” tab.
  • Select your email provider from the Email options dropdown (Outlook, QuickBooks Email, or Webmail ).
  • Configure your email settings, including the email address, server information, and security settings, depending on your email provider.
  • To ensure the settings work, click the “Send Test Email” button. Review and customize additional settings, such as the email template and subject line.
  • Click “OK” to save your email preferences. Try sending invoices or forms again to see if the issue is resolved.

Solution 2: Just set up your server info for Comcast email

Setting up the correct server information for your Comcast email in QuickBooks is crucial to ensure smooth email communication and resolve any email-related problems. 

  • Open QuickBooks and go to the “Edit” menu. Choose “Preferences.” In the left panel, select “Send Forms.”
  • Click on the “My Preferences” tab. Select “Web Mail” as your email provider. Click on the “Add” button to add your Comcast email account.
  • Fill in your Comcast email address. Choose the correct email provider type for Comcast. Click the “Use Enhanced Security” checkbox for a more secure connection.
  • Enter your incoming and outgoing email server information. Comcast’s incoming mail server is typically “,” and the outgoing mail server is “” Choose the correct port numbers (usually 993 for IMAP and 587 for SMTP).
  • Set the SSL/TLS setting to match your Comcast email configuration. Click “OK” to save your settings.
  • Send a test email to ensure the setup is correct. Attempt to resend your invoices or forms to verify the issue is resolved.


Addressing invoice-sending issues in QuickBooks is crucial to maintaining efficient financial operations. Troubleshooting email settings, resolving software conflicts, and ensuring network connectivity are essential for timely and accurate invoice delivery for smooth financial transactions. If you are still unable to send invoices in QuickBooks, our team will surely help you fix this. Simply call our team at (855)-955-1942 , and it will get fixed!


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