Griddler is a Ruby on Rails engine for that creates an endpoint for services that convert incoming emails to HTTP POST requests. As a default, Griddler uses the SendGrid email API, but it can also be used with Cloudmailin, Postmark, or Mandrill. See the SDK documentation for instructions on installing and configuring Griddler. The SDK is funded and maintained by Thoughtbot.
Contactology, an Email Marketing service, has announced the release of its API. The new API Version 2 has big changes that make it more developer friendly. First, it adopts the REST style over Version 1 that was based on SOAP. It also provides data as developer-preferred JSON. The changes make the API easier to use, which is good for everyone.