This client library written in Ruby allows developers build headers for the SendGrid SMTP API in Ruby. The SendGrid SMTP API allows developers to deliver custom handling instructions for email. SendGrid is an email application.
Campaign Monitor, the email marketing software aimed at designers, recently announced a massive API update that is sure to please developers. The changes are less of an update and more of a complete redesign from the ground up. The folks down in Sydney have gone RESTful, the new version no longer supporting SOAP. The API also added realtime tracking and integrated powerful segmentation tools.
FullContact has announced the CardShark API. The CardShark API allows users to "to send images of business cards to FullContact, and...receive back a response containing transcribed structured contact data." The advantage the API method of optical character recognition over competitors lies in the ability to send contacts to devices and applications beyond the device that captured the initial picture.