Attachment Issues

Fix Word Mail Merge Logo Appearing as Attachment in Outlook for Mac

Rana Garcia Sep 25, 2026 868 views

Question details

A company logo inserted into a Word mail merge displays as a file attachment rather than an inline image when sent through Outlook for Mac.

Product: Microsoft Word, Outlook for Mac
Device & OS: macOS
Scenario: Sending bulk emails with an embedded company logo using the Mail Merge feature in Word and Outlook.
Observed behavior: The embedded image fails to render inline and instead appears as a downloadable file icon or attachment in the recipient's email.

Before you start

Ensure that your Outlook for Mac is set as your default email client and verify that both Microsoft Word and Outlook are updated to the exact same version build.

Solution 1Recommended

Set Merge to E-Mail Format to HTML

Selecting HTML instead of plain text ensures that images and rich formatting are preserved inline rather than converted into attachments.

When performing a mail merge on macOS, default settings or plain text configurations will automatically strip inline images and convert them into standard email attachments. Forcing the HTML format is required for inline rendering.

Open Mail Merge Manager

Navigate to the Mailings tab in your Word document containing the company logo.

Select Finish & Merge

Click on the 'Finish & Merge' dropdown button located on the right side of the ribbon.

Choose Merge to E-Mail

Select 'Merge to E-Mail' from the available dropdown options.

Change Format to HTML

In the prompt that appears, locate the 'Send As' or 'Message Options' format dropdown, select 'HTML Message', and complete the merge.

Verify Sending Format: After completing the merge, check your Outlook Sent Items folder to verify that the logo is displaying inline.

Solution 2

Use a Small, Locally Stored Image

Replacing linked images or INCLUDEPICTURE fields with a directly inserted local file can resolve rendering conflicts in Mac's mail merge.

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1. Download WPS Office: Visit the official WPS website and download the macOS version.
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Frequently Asked Questions

Why do my embedded images turn into attachments in Mac mail merge?

macOS processes OLE objects and linked images differently than Windows. If the merge is sent as Plain Text or if the image is linked rather than embedded locally, Outlook converts the unsupported inline element into a standard file attachment.

Does the INCLUDEPICTURE field work in Word for Mac?

While INCLUDEPICTURE works well for printing or saving documents to PDF, it frequently fails to render inline when performing a direct Mail Merge to email via Outlook on macOS. Using locally embedded images is highly recommended instead.

How do I ensure my HTML mail merge preserves my logo's formatting?

Ensure that the image is inserted directly from your local drive rather than linked to a URL, keep the image file size optimized, and double-check that the 'Send As' format is explicitly set to HTML Message before completing the merge.

Outlook & Email Problems