How can I revoke consent to receive news from Wire?

On desktop: 

In the conversation list:

1. Click Settings .
2. Under DATA USAGE PERMISSIONS, untick Receive News Letter.

On mobile:

In the conversation list:

1. Tap your Profile in the upper left corner.
2. Tap Settings .
3. Tap Account.
4. Tap Data Usage Permissions.
5. Toggle Receive News to off.