Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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as part of your use of the fitbit service , you may receive notifications , text messages , alerts , emails , and other electronic communications . 

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