Indeed, there is no way to modify an existing message template directly in Netscape. Here's how to do it indirectly:
- Open the Templates folder in Mozilla Thunderbird, Netscape or Mozilla.
- Double-click on the template you want to modify.
- This creates a new message using the template.
- Modify the message.
- Save it as a new template via File | Save As | Template.
If you want to replace the old template with the new one, you have to delete the old message template from the Templates folder after saving the new template.
