Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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notice will be deemed received and properly served immediately when posted on the products or when an e-mail or other electronic communication is sent . 

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. OPTIONS: ['None' 'Arbitration' 'Jurisdiction' 'Unilateral change'
 'Limitation of liability' 'Content removal' 'Unilateral termination'
 'Choice of law' 'Contract by using'].