Track the documents you send. Take your existing documents (PDF, Google Doc, Notion, Slide deck, video, etc) and know who read it and who they forward it to. Identify warm leads and focus your time on the most engaged ones. Use webhooks in Send to automate your workflows. Notify tools like Clay, Zapier, Make, Attio whenever a document is opened, and pass along important information like the readers name, email, or phone.