Using the "Snippet for Heap CRM" Safari Extension, users of Heap CRM can quickly select content from any website and save it as a message in Heap CRM. This is the Safari equivalent to the "Save to Heap CRM" Chrome Extension.
The extension works offline and periodically syncs with the Heap service. This means that the interface is always snappy and it even works on unstable connections.
Oh, and the extension is updated to look great on retina displays.