All notices, approvals, consents, requests, and other communications hereunder shall be in writing and shall be delivered (i) by personal delivery, or (ii) by national overnight courier service, or (iii) by certified or registered mail, return receipt requested, or (iv) via facsimile transmission, with confirmed receipt, or (v) via email. Notice shall be effective upon receipt except for notice via fax (as discussed above) or email, which shall be effective only when the recipient, by return or reply email or notice delivered by other method provided for in this Section 4.3 , acknowledges having received that email (with an automatic “ read receipt ” or similar notice not constituting an acknowledgement of an email receipt for purposes of this Section 4.3 , but which acknowledgement of acceptance shall include cases where recipient ‘replies’ to such prior email, including the body of the prior email in such ‘reply’). Such notices shall be sent to the applicable party or parties at the address specified on the signature page hereof, subject to notice of changes thereof from any party with at least ten (10) business days’ notice to the other parties. Rejection or other refusal to accept or the inability to deliver because of changed address of which no notice was given shall be deemed to be receipt of the notice as of the date of such rejection, refusal or inability to deliver.