Your "Polyglot Club Mailbox" is an Internal Message Service that allows you to contact other registered Polyglot Club Members sending them personal messages.
Alternately, your Internal Mailbox will enable other Polyglot Club Members to send you personal messages.
Note that this Internal Mailbox is not a regular email account. Thus, you will not be able to receive regular emails in this Mailbox. This account is specifically geared towards communication between Polyglot Club Members.
Every time an Internal Message is sent to a Polyglot Club Member, s/he will be informed by a delivery notice on his/her regular email account. Therefore, it is important that you enter a valid email account address when you register, and that you tick the appropriate box to receive email notification.
You can check your email address in the My Profile section.

 Help to correct