User-agent: Googlebot
Disallow: /newsletter/
Crawl-delay: 0

User-agent: bingbot
Disallow: /newsletter/
Crawl-delay: 0

User-agent: DuckDuckBot
Disallow: /newsletter/
Crawl-delay: 0

User-agent: * 
Disallow: /newsletter/
Crawl-delay: 1

User-agent: AwarioRssBot 
Crawl-delay: 10
 
User-agent: AwarioSmartBot
Crawl-delay: 10