Reconfigures the wp_mail() function to use CheetahSender SMTP instead of wp_mail() function.
If other plugins you're using are not coded to use the wp_mail() function but instead call PHP's mail() function directly, they will bypass the settings of this plugin. Normally, you can edit the other plugins and simply replace the
mail( calls with
wp_mail( (just adding wp_ in front) and this will work. I've tested this on a couple of plugins and it works, but it may not work on all plugins.
No. WordPress 2.7 changed the way options were updated, so the options page will only work on 2.7 or later.
No you can't, WordPress do not actually propose those feature, hope it will in a next future ! Be sure, as if it would be available, it would be implemented ASAP :)
No, the only solution to do this is to override the functions that are located in wp-includes/pluggable.php which contains all these features. It's up to you, by the way, it looks like hardcoding the WordPrfess Core.