# QuickBooks Has Stopped Emailing Invoices – Here Is How to Fix It Fast
When [**QuickBooks stops emailing invoices**](https://www.linkedin.com/pulse/how-get-free-quickbooks-invoicing-software-small-business-smith-way1c/), business workflow is interrupted, payments can be delayed, and customer communication suffers. We understand how essential reliable invoicing is, so this comprehensive guide explains [**why QuickBooks fails to send emails**](https://www.linkedin.com/pulse/how-fix-quickbooks-email-error-resolve-critical-issues-olivia-smith-erv7c/) and provides **accurate, step-by-step solutions** to restore seamless emailing functionality in QuickBooks Desktop and QuickBooks Online.
**Common Reasons QuickBooks Stops Sending Invoices**
Before applying fixes, it’s important to identify [**what causes QuickBooks email failures**](https://www.linkedin.com/pulse/how-fix-quickbooks-email-error-resolve-critical-issues-olivia-smith-erv7c/). The most frequent issues include:
* **Incorrect email preferences or misconfigured settings**
* **Outdated QuickBooks version**
* **Damaged or missing MAPI32.DLL file**
* **Firewall, antivirus, or security conflicts**
* **Email provider security updates**
* **Incorrect server, SSL, or port configurations**
* **Damaged company data files**
* **Outlook integration errors**
Understanding the root cause allows you to apply the correct fix efficiently.
**Check and Correct Email Preferences in QuickBooks**
Start by confirming that **email settings are correctly configured**.
**For QuickBooks Desktop**
1. Open **QuickBooks**
2. Select **Edit > Preferences**
3. Click **Send Forms**
4. Choose your **email provider**
5. Ensure your **email address** is valid
6. Confirm **server credentials**, SSL, and ports
7. Click **OK** to save
Restart QuickBooks and test sending an invoice.
**Verify Outlook or Email Client Settings**
If you use [**Outlook integrated with QuickBooks**](https://www.linkedin.com/pulse/how-fix-quickbooks-email-error-resolve-critical-issues-olivia-smith-erv7c/), incorrect Outlook configuration can stop invoice emails.
* Ensure Outlook is set as **default email app**
* Confirm Outlook opens manually without errors
* Check **Outbox, Draft, and Sent folders**
* Clear stuck emails
* Make sure you are signed in correctly
**Set Outlook as Default Email Program**
1. Open **Control Panel**
2. Go to **Default Programs**
3. Select **Set Default Programs**
4. Choose **Outlook**
5. Click **Set as Default**
Now retry sending invoices from QuickBooks.
**Repair the MAPI32.DLL File (QuickBooks Desktop)**
A damaged **MAPI32.DLL** file stops QuickBooks from communicating with email software.
**Repair Steps**
1. Close **QuickBooks**
2. Navigate to:
C:\\Windows\\System32
3. Locate **MAPI32.DLL**
4. Rename to **MAPI32.OLD**
5. Restart your computer
6. Windows will automatically recreate a fresh file
Open QuickBooks and try emailing again.
**Update QuickBooks to the Latest Version**
Running [**outdated QuickBooks software**](https://www.linkedin.com/pulse/how-fix-quickbooks-email-error-resolve-critical-issues-olivia-smith-erv7c/) can cause compatibility failures with email platforms.
**Update QuickBooks Desktop**
1. Open QuickBooks
2. Select **Help**
3. Click **Update QuickBooks Desktop**
4. Choose **Update Now**
5. Install updates and restart
After updating, test email functionality.
**Check Email Server and Security Settings**
Security or server conflicts may block invoice emails.
**Do the Following**
* Whitelist QuickBooks in **Firewall & Antivirus**
* Allow QuickBooks in **Windows Defender**
* Enable **Less Secure App Access** if using Gmail (if applicable)
* Ensure **SSL/TLS** is enabled
* Verify **SMTP server settings**
* Confirm correct **port numbers** (commonly 465 or 587)
Restart QuickBooks and send a test invoice.
**Fix Email Issues in QuickBooks Online**
If **QuickBooks Online has stopped emailing invoices**, follow these steps:
1. Go to **Settings > Company Settings**
2. Select **Sales**
3. Under **Messages**, verify email details
4. Confirm email template is valid
5. Check **Spam**, **Junk**, and **Promotions** folders
6. Add Intuit service email to safe sender list
7. Ask customers to whitelist QuickBooks sender address
Send another invoice to confirm success.
**Use Webmail Correctly in QuickBooks Desktop**
For users who integrate QuickBooks with **Gmail, Yahoo, or other webmail**, incorrect credentials trigger email failures.
**Configure Webmail Properly**
1. Open **QuickBooks**
2. Go to **Edit > Preferences**
3. Select **Send Forms**
4. Add your **Webmail account**
5. Enter **email address and provider**
6. Input correct **SMTP server**
7. Enable **SSL**
8. Save settings
Restart QuickBooks.
[**Repair QuickBooks Installation Files**](https://www.linkedin.com/pulse/how-fix-quickbooks-desktop-installation-error-causes-solutions-smith-6itic)
If QuickBooks program files are damaged, emailing will fail.
**Run QuickBooks Tool Hub**
1. Download and install [**QuickBooks Tool Hub**](https://www.linkedin.com/pulse/how-fix-quickbooks-email-error-resolve-critical-issues-olivia-smith-erv7c/)
2. Open the tool
3. Select **Program Problems**
4. Click **Quick Fix My Program**
After repair completes, reopen QuickBooks and email an invoice.
**Check Company File for Corruption**
A damaged company file may prevent invoice emails.
**Verify and Rebuild Data**
1. Go to **File**
2. Click **Utilities**
3. Select **Verify Data**
4. If issues are found, choose **Rebuild Data**
Try emailing again.
**Ensure Correct User Permissions**
Limited access can restrict email capability.
**Adjust Permissions**
1. Open **Company Settings**
2. Select **Users**
3. Edit assigned permissions
4. Allow **Send Forms / Email Access**
Save and retry.
**Test Email Outside QuickBooks**
To ensure the problem is QuickBooks-related:
* Log in to your email account separately
* Send a test email
* Confirm it sends successfully
If email fails outside QuickBooks, resolve email account issues before troubleshooting QuickBooks.
**Final Steps If Nothing Works**
If QuickBooks still won’t email invoices:
* Restart your system
* Reinstall Outlook (if used)
* Reinstall QuickBooks using **Clean Install**
* Contact Intuit Support if persistent issues remain
**Prevent** [**QuickBooks Email Problems**](https://www.linkedin.com/pulse/how-fix-quickbooks-email-error-resolve-critical-issues-olivia-smith-erv7c/) **in the Future**
To avoid recurring issues, follow these best practices:
* Keep QuickBooks updated
* Maintain email security settings
* Regularly verify company data
* Avoid expired passwords
* Ensure Outlook or email client is stable
* Backup QuickBooks regularly
**Conclusion**
When [**QuickBooks stops emailing invoices**](https://fixquickbookserror.wordpress.com/2025/12/23/why-quickbooks-is-unable-to-send-your-email-to-outlook-complete-troubleshooting-guide/), it disrupts financial operations, affects cash flow, and delays communication. By checking email preferences, updating software, repairing system files, adjusting security settings, and verifying email credentials, businesses can restore flawless invoice emailing quickly and confidently. These proven troubleshooting steps ensure your invoicing remains smooth, professional, and uninterrupted.
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