Winnr gives outbound teams cold email infrastructure at scale: buy domains, spin up SMTP mailboxes with automatic DKIM, SPF and DMARC, and warm them up — all in under 10 minutes, at a fraction of Google Workspace pricing. Unified inbox for replies, one-click CSV export to Smartlead/Instantly, webhooks, and an API. Unlike renting mailboxes from an agency, you own the whole stack.
