All notices required or permitted hereunder shall be in writing and shall be served on the parties at the addresses set forth in Paragraph 1.1 . All notices shall be in writing and shall be deemed to have been properly given or served as of (i) the date of personal delivery with acknowledgment of receipt; (ii) three (3) business days after the same is deposited in the United States mail, prepaid, for delivery by registered or certified mail, return receipt requested; or (iii) the first business day after the date delivered to a reputable overnight courier service providing proof of delivery. Notwithstanding the foregoing, notices to Seller or Purchaser under this Agreement may be delivered by electronic mail with an original copy thereof transmitted to the recipient by one of the means described in subsections (i), (ii), or (iii) above. Notices sent pursuant to this Section 10.11 shall be deemed effective when actually delivered by electronic mail.