Smart Tags allow quick access to commands for some data items in a message.
To enforce using smart tags:

1. In main Outlook menu click Tools < Options.
2. Click the "Spelling" tab.
3. Click the "Spelling and AutoCorrection button".
4. Click the "AutoCorrect Options" button.
5. Click the "smart tags" rubric.
6. Select the "label text with smart tags"
7. Choose the recognizers needed.
8. Click OK.