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Mail Merge Emails not sent

Rich, Sharon Kay 0 Reputation points
2026-02-23T23:37:01.71+00:00

After I finished the email mail merge in Word, I didn't see any emails in my Outlook Sent folder and I included an email to myself in the mail merge, which I didn't receive. I didn't see an option to include my email address as the "From". The preview worked great with the fields showing up properly for each recipient. There were no errors found. I followed all of the directions, but it seems that I was unsuccessful. Any ideas on what I am missing?

Outlook | Windows | New Outlook for Windows | For home
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  1. Q&A Assist
    2026-02-23T23:37:10.4533333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    It seems that you are experiencing issues with the mail merge feature in Word, specifically related to sending emails through Outlook. Based on the context, the problem may be due to the version of Outlook you are using. If you are using the New Outlook for Windows, it is important to note that this version only partially supports the mail merge to email feature. The New Outlook's architecture does not fully support the MAPI integration that Word relies on to send emails, which could explain why you are not seeing any emails in your Sent folder, even after the merge appears to complete successfully.

    To resolve this issue, you might consider switching back to Classic Outlook, which fully supports the mail merge feature. You can toggle back to Classic Outlook using the switch at the top right of the Outlook window. If you do not see this toggle, it may be located under the Help menu. This should allow your mail merge emails to be sent successfully.

    Additionally, ensure that your Outlook is set as the default email application and that you are logged into the same Microsoft 365 account across Word, Excel, and Outlook.

    If you continue to have issues after switching back to Classic Outlook, you may want to check for any updates or consult the Microsoft Outlook blog for any improvements related to this feature.

    References:

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  1. Viego An 9,070 Reputation points Microsoft External Staff Moderator
    2026-02-24T01:43:01.8433333+00:00

    Dear @Rich, Sharon Kay,

    Thank you for reaching out to Microsoft Q&A forum. I am happy to assist you.

    Word Mail Merge relies on MAPI (Messaging Application Programming Interface) to send emails through Outlook. This technology is fully supported in Classic Outlook, but New Outlook does not yet provide full MAPI support. As a result, Mail Merge emails may not be sent or may behave unexpectedly when New Outlook is used.

    Please note that New Outlook is still undergoing active development, and some legacy features, such as Word Mail Merge that relies on MAPI integration, are not yet fully supported. Your observation is valuable, and we truly appreciate you highlighting this, as reports like yours help identify areas where further improvement is needed.

    As a forum moderator, my role is limited to providing general guidance and basic troubleshooting based on publicly available information. I don’t have access to internal systems, nor the ability to influence product design or feature timelines. Decisions regarding product enhancements and feature support are handled directly by the Outlook product team. If Mail Merge is essential to your workflow at this time, the recommended workaround is to use Classic Outlook, which continues to fully support this functionality. To help improve New Outlook moving forward, I strongly encourage you to submit feedback directly to Microsoft, where it can be reviewed by the product team:

    You can submit feedback directly to Microsoft via the Outlook app (Help > Give feedback), or through Feedback Hub by 

    Go to: Microsoft 365 Feedback Hub > Send Feedback > Describe your proposal in detail.   

    User's image

    Sharing your experience through this channel is the most impactful way to advocate for a change that would benefit you and other users.

    Thank you again for your patience and for bringing this to our attention. While I can't change the product's design, please don't hesitate to reach out if you have any other questions about its current functionality. Your perspective is important, and I’m confident it will support the continued development of the New Outlook experience.

    If you need any further assistance, feel free to reach out. I am here to help. Thank you very much for your understanding and your cooperation.

    2 people found this answer helpful.
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  2. Rich, Sharon Kay 0 Reputation points
    2026-02-23T23:58:03.5233333+00:00

    Switching to Classic Outlook resolved my issue with using email Mail Merge from Word. There should be instructions added to Word regarding this issue to switch to Classic Outlook. My outbox in Classic Outlook contained multiple sets of the emails and thus my recipients received multiple emails, which erased all professionalism that was being sought by using this feature.

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