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Attachment Issues

Fix Excel Send to Mail Recipient Only Sending as Attachment

Adam DavisAdam Davis Sep 29, 2026 868 views

Question details

The user is trying to send an Excel worksheet directly in the email body but finds that Excel only sends it as an attached file.

How to Fix Excel Send to Mail Recipient Sending Only as an Attachment
Product
Microsoft Excel
Device & OS
Windows
Scenario
Sending a worksheet or print area via email directly from Excel after a system or application upgrade.
Observed behavior
Excel automatically attaches the entire workbook as a file instead of inserting the selected worksheet or print area into the email message body.
Before you start

Ensure that Outlook is set as your default email client in Windows settings and check if you have recently switched to the New Outlook app, which handles protocols differently.

Solution 1Recommended

Switch Back to Classic Outlook

New Outlook does not support the older Simple MAPI workflow required to embed Excel worksheets in the email body. Reverting to Classic Outlook restores this functionality.

This behavior is usually related to changes in Excel and Outlook integration rather than Windows itself. Classic Outlook still retains the legacy components required for sending worksheet contents directly in the message body.

1
Open New Outlook

Launch the New Outlook application on your Windows computer.

2
Locate the toggle

Look for the "New Outlook" toggle switch located in the top-right corner of the application window.

3
Revert to Classic Outlook

Turn the toggle off. Outlook will close and automatically reopen using the Classic Outlook interface.

4
Test the Excel feature

Restart Microsoft Excel, select your worksheet, and click "Send to Mail Recipient" again to verify it is now embedded in the email body.

Switch Back to Classic Outlook
Integration Restored: Once Classic Outlook is running as your default mail client, Excel's native Simple MAPI commands will function as they did before the upgrade.
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  1. 1. Download the software: Visit the official WPS Office website and download the free installation package.
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Frequently Asked Questions

Why did Excel Send to Mail Recipient suddenly stop embedding worksheets?

Microsoft's New Outlook handles email requests differently and no longer supports the Simple MAPI protocol, which older Excel versions relied upon to insert spreadsheet grids directly into the email body.

Can I enable Simple MAPI in Windows 11?

Simple MAPI support depends entirely on your default email client rather than the Windows OS. Using Classic Outlook or a compatible third-party desktop email client restores this functionality.

Is there a way to force New Outlook to accept embedded worksheets from Excel?

Currently, New Outlook does not natively support the automatic embedding feature from Excel. You must either revert to Classic Outlook or manually copy and paste the spreadsheet data into the new email draft.