>>In Word, there is this nasty feature to automatically correct your spelling while you type. Perhaps if Word is used as the default editor for Outlook, changing the option in Word might help.
>>
>>In Word 2003 (details may vary, I am translating from Spanish...), in this order:
>>
>>

Tools
>>

Autocorrection (this is the third option from the bottom)
>>

Automatically use suggestions from the spell checker (the last option at the bottom).
>
>Thanks, this has resolved the issue.

Great; actually I wasn't quite sure about the interaction between Word and Outlook, which I never used.

Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)