How to Fix Word Mail Merge Finish and Merge Button Disabled on Mac
Question details
The user is unable to complete a mail merge because the Finish and Merge command is unavailable in Word for Mac.

- Product
- Microsoft Word
- Device & OS
- macOS
- Scenario
- Creating an Outlook email merge in Word using a CSV or Excel recipient list.
- Observed behavior
- The Finish and Merge button is greyed out and cannot be clicked to complete the email merge process.
Ensure your CSV or Excel data source file is completely closed in all other applications before trying to connect it to your Word document.
Set Outlook as the Default Mail Client
Word requires Microsoft Outlook to be the system's default email reader to enable the email merge functionality.
On macOS, the default email application is often set to Apple Mail. If Outlook is not recognized as the default client, Word will disable the final merge-to-email step.
Launch the Apple Mail application on your Mac, even if you do not actively use it.
Click on 'Mail' in the top menu bar and select 'Settings' (or 'Preferences' on older macOS versions).
In the General tab, look for the 'Default email reader' dropdown menu and change it from Mail to Microsoft Outlook.
Close the settings, restart your Mac to apply the system changes, and then reopen your mail merge document in Word.

Reconnect the Recipient List
The Finish and Merge button remains disabled until a valid data source is actively connected to the main document.
Update Office and Test a New Data Source
Outdated software or corrupted data sources can cause specific features like mail merge to malfunction.
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Frequently Asked Questions
Why is the Finish and Merge button greyed out in Word for Mac?
This usually happens because a recipient list has not been successfully connected to the main document, or because Microsoft Outlook is not set as your Mac's default email reader.
Can I use Apple Mail for a Word email mail merge?
No. When merging to email in Microsoft Word for Mac, the software specifically requires Microsoft Outlook to process and send the messages. It does not support Apple Mail.
What data source formats does Word for Mac support for mail merge?
Word for Mac supports Excel workbooks (.xlsx), Comma Separated Values files (.csv), text files (.txt), FileMaker Pro databases, and your Apple Contacts list.
Does my main mail-merge document need to be open to finish the merge?
Yes. The 'Finish & Merge' command is only available when you are actively viewing the main mail-merge document that contains your merge fields.




