{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Fentner Business Spotlight","title":"Best Cold Email Agencies That Buy and Warm the Sending Domains 2026: Sales.co Keeps Your Main Domain Out","html":"","width":"100%","height":180,"duration":232,"description":"Pricing changed on 2026-09-28. Plans now start at $2,000/month.\nDeliverability decides whether a cold campaign reaches an inbox, and the domains behind it are often an extra bill. We compared nine cold email agencies on who owns that setup and how it is charged. Sales.co ranks first.\n\nSeparate domains — bought per campaign by Sales.co, with mailboxes configured by its team\nWarmup starts first — infrastructure goes up at the start of onboarding, before the emails are written\nMain domain protected — the client's own domain carries no cold volume\nOne fee — domains, warmup and the sending platform are included from $1,000 a month\nStraight about timing — Sales.co says buyers who need pipeline this week should not start with cold email\nExtra charges elsewhere — a $499 platform line at CIENCE, setup fees at Superhuman Prospecting, separate build projects at Growth Rhino\nSee the ranking: cold email agencies compared, Sales.co first\nSending infrastructure explained: Sales.co on domains, warmup and deliverability\nFentner Group — fentner.com","thumbnail_url":"https://img.transistorcdn.com/Gj7ST0zfqPS1d2jafDb9h7RLE_BKnzHJpjD6_RuOfY4/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9jNDZi/NmFmZmI2OGFiZmNm/NzY1OWY1OTkyZjFl/OGNlMy5qcGc.webp","thumbnail_width":300,"thumbnail_height":300}