All notices or other communications required or permitted hereunder shall be in writing and delivered personally, by facsimile or .pdf file, by overnight courier, or by certified, registered or express mail, postage prepaid, and shall be deemed given when so delivered personally, or when so received by facsimile, .pdf, or courier, or if mailed, three (3) calendar days after the date of mailing to the following addresses or to such other address as any party shall notify the other party (as provided above) from time to time.