Benny Rubin, founder of Senders.co, talks about email deliverability. He shares how he came up with the business idea, got clients, and why he left and came back. He also gives suggestions for better email campaign results. They discuss the layers and challenges of email deliverability, the evolving landscape of cold email outreach, challenges of email marketing, managing profit margins, using project management software, recent changes in email deliverability, closing sales with warm emails, and making introductions.