The web project uses the OS calls to send any kind of e-mail messages: new user registration confirmation; order notification etc. If the mail subsystem is not configured properly, the e-mail messages may be placed in a spam folder, have incorrect headers or not reach destination at all.

1. If you have the Subscription module installed, create a test distribution issue, with some files enclosed, in "Services > Newsletters > Newsletter issues" and sent it to yourself. Having received the e-mail message, analyze its headers and have your system administrator help you configure the mail subsystem if necessary.
2. Otherwise, if you don't have the Subscription module, open your account for editing and enable the "Notify User" option (or use any other type of notification) and then save your account. You will receive the notification message. Analyze it as described in (1).
3. Ask the developer to send a test message to you using PHP functions.
4. If you don't see any incoming message at all, it is likely that it has been placed in the spam folder.