I use this plug-in regularly. In general, it does what it says it will. However, it ought to be more capable without too much more programming effort.
- The e-mail text is just a stream of run-on text. The user ought to be able to insert paragraphs;
- By default, the plug-in inserts the entire post text into the message. When you change it, there is no way to 'Update' the post as it will be seen by the user in the final e-mail.
There are actually not many easy-to-use plug-ins that do the function of Email Users. This is a good plug-in that can be made even better.