All notices required or permitted to be given under this Agreement shall be considered as duly given, if in writing and hand delivered or sent by registered mail to NN2PC or the Employee at their respective addresses set forth below, or to such other addresses as may be subsequently given as herein required. Notices may, however, be given initially by email, provided that confirmation of such notice is received in compliance with the foregoing provisions within three (3) days of the date of the initial notice. All notices shall be deemed to have reached the addressee upon first receipt with proof thereof.