Open the Tools menu and choose Options.
The Options dialog box opens. Click the Mail Format tab.
Click the down arrow next to the Use Stationery by Default field and select the stationery you want to use.
If you like using stationery, you may want to set up Outlook to always use a particular stationery for all new messages. You can do so using the Mail Format options. Keep in mind that you can always change the stationery for individual messages.
Because the drop-down list does not display a preview, it may be handy to click the Stationery Picker button and select from the various options to preview and select your stationery.
The new default stationery is listed. Click OK.
When you create a new message, Outlook uses the stationery you selected.