...
30. Notices. We may give notice to you by means of (i) a general notice in your account information, (ii) by electronic mail to your e-mail address on record in your Registration Data, or (iii) by written communication sent by first class mail or pre-paid post to your address on record in your Registration Data. Such notice shall be deemed to have been given upon the expiration of forty-eight (48) hours after mailing or posting (if sent by first class mail or pre-paid post) or twelve (12) hours after sending (if sent by email). You may give notice to us (such notice shall be deemed given when received by us) at any time by any of the following: (a) by electronic-email sent to us at the following email address, hello@grokioapp.com; or (b) by letter delivered by nationally recognized overnight delivery service or first class postage prepaid mail to us as follows: Grokio Communities LLC, 201 E 5th Street, Suite 1227, Sheridan, WY 82801, in either case, addressed to the attention of "President of the Company". Notices will not be effective unless sent in accordance with the above requirements.
...