This How To applies to Outlook users who have Word set as their email editor.

To set up your account to open Word documents in Normal view or Reading Layout, open Microsoft Word.

Open the Tools menu, Options.

If you can not find "Options..." click on the expand arrow at the bottom of the Tools menu.

2. Click on the General tab in the Options window.

Select Allow starting in Reading Layout if you would like Word to open your documents in this view, or un-check if you would like documents to open in the Normal view.

Click OK.