Want to wrap to 80 characters in Outlook, just like Gmail does to emails sent as Plain Text

The only way I've come up with is to create a HTML template containing a fixed width box with white/no borders. You can set the width to approximately 80 characters.

Here is a guide to creating Outlook stationery from MS Word.

When following the guide, where it says 'design your stationery', create a table with 1x1 rows and columns, and switch off the borders.

Then when you come to write your email using the template, simply write within that table cell.

NOTE: You may need administrator access to add files to the C:\Program Files\Common Files\microsoft shared\Stationery folder.