Which SDKs currently support long-term message history functionality?

All of our SDKs have history APIs that allow you to retrieve messages from storage.

If the SDK/platform you are using does not support it, you can always use our REST API. For example, this URL gets the most recent messages published to channel storage_test with sub-key demo :

    http://pubsub.pubnub.com/v2/history/sub-key/demo/channel/storage_test