WP SES is a neat plugin enabling your privatly hosted WordPress blog to send emails using the news Amazon SES Service.
Simple Email Service is the latest Web service from Amazon.
It gives you access to an API, that allows you to send emails (lots of them) via the Amazon mailers.
With WP SES installed no more blacklist fears, no more batch sending or capping of emails : You can send thousands of (clean) emails in an instant, and got usage and delivery statistics.
WP-SES is right now in functionnal Beta and will be released real soon !
You can read more about Amazon SES here : Amazon SES