I'm developing a large custom plugin/module for a client, which sends several e-mails: some go to the webmaster, some go to the visitor who left his e-mailaddress. We have developed a nive e-mailtemplate, but our client likes to edit the bodytext and sudject of the e-mails (not only header and footer). A wysiwyg-editor is not needed. It would be great if he could edit the text as plain text.
Is there a plugin for this? (I couldn't find one)