Twilio has launched the Message Feedback API which monitors when end users receive messages. The API tracks actions that indicate when a message was received and reports the action back to Twilio. In turn, Twilio can tweak its services and delivery to adjust for network variances across the globe.
Pusher has announced an enhanced "Sandbox" plan to its tiered pricing program. The original Sandbox version permitted 20 concurrent connections, and 100,000 messages per day. Now, the plan allows 100 concurrent connections and 200,000 messages per day. The move is aimed to attract new developers.