Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
unless otherwise specifically indicated , all notices given by you to us must be given to headspace at help@headspace.com . 

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