flexi auth - A user authentication library for CodeIgniter

[eluser]haseydesign[/eluser]
@estevo

The function that handles all emails send via flexi auth can be location in the send_email() function within 'application/models/flexi_auth_model.php'.

Have a look around in this function how data is being passed around.
Also try out the CI email function

Code:

$this->email->print_debugger();

Read @ http://ellislab.com/codeigniter/user-gui...email.html

You seem to suggest from your first comment that it works as expected on your dev setup, but not your SuPHP setup.
If this is the case, it still suggests it's a conflict between CI's config and the server.
However, try having a look in the about mentioned function and see if you can track down the issue.