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Fix HTML Mail Merge in Word Not Sending Emails
Question details
The user is attempting to perform an HTML mail merge in Word, but the process finishes without actually sending the emails out.
- Product
- Microsoft Word
- Device & OS
- not provided
- Scenario
- Sending bulk emails via mail merge using the HTML message format.
- Observed behavior
- The mail merge functions normally for plain text or attachments, but silently fails to send emails when set to HTML format.
Verify which version of Outlook is currently active on your computer, as the New Outlook handles cross-application commands differently than the Classic version.
Switch to Classic Outlook
The New Outlook application is not MAPI-compliant and cannot reliably process HTML mail merges from Word. Reverting to Classic Outlook resolves this issue.
Microsoft's New Outlook currently lacks full Support for MAPI (Messaging Application Programming Interface), which Microsoft Word relies on to hand off HTML-formatted emails. Because of this limitation, Word appears to process the merge, but the data never reaches the outgoing mail server.
Launch the New Outlook application on your desktop.
Look for the 'New Outlook' toggle switch located in the top right corner of the application window and turn it off.
Allow the application to close and automatically relaunch into Classic Outlook.
Return to Microsoft Word and execute your HTML mail merge again. The emails should now route properly through Classic Outlook.
Utilize a Third-Party Merge Tools Add-in
If you require advanced HTML merge features beyond standard Word capabilities, a dedicated Merge Tools add-in can handle the process.
Try WPS Office for Seamless Document Management and Mail Merges
If application compatibility issues and forced updates disrupt your workflow, consider switching to WPS Office. It provides a lightweight, highly compatible, and user-friendly environment for handling all your document creation and mail merge needs without the hassle.
- 1. Download WPS Office: Visit the official WPS website and download the free WPS Office suite.
- 2. Open WPS Writer: Launch WPS Writer and open the document you wish to use for your mass email.
- 3. Access Mail Merge: Navigate to the 'References' or 'Mailings' tab and select 'Mail Merge' to connect your data source and generate emails.
Frequently Asked Questions
Why does my mail merge work for plain text but not HTML?
Plain text and attachments use a different routing protocol that the New Outlook can handle. However, sending HTML-formatted emails directly from Word requires full MAPI compliance, which the New Outlook currently lacks.
How do I know if I am using the New Outlook?
The New Outlook has a distinctive 'New Outlook' toggle switch in the top right corner of the window. Its interface is also modernized and closely resembles the Outlook Web application.
Will third-party merge add-ins work if I stay on the New Outlook?
No. Currently, advanced third-party Merge Tools add-ins require the robust architectural support found only in Classic Outlook to execute HTML merges properly.
