> Drupal sends plain-text emails by default. Plain text mails > should (in my opinion) be wrapped to 80 lines. If you want to > send html-mail you need to use some contributed module. That > module can undo the wrapping of the text for the html mails, > if desired.
Exactly for that reason, only the default plain-text mail implementation in Drupal 7 wraps the text. Contributed modules that are sending HTML messages can easily skip this entire step now. One more giant YAY! for Drupal 7! sun
