I set up WarmySender to warm up two mailboxes on a brand-new domain before starting cold outreach for my consultancy. About three weeks in, the results have been excellent: over the last week, roughly 97–100% of warmup emails landed in the inbox across both mailboxes, and health scores are sitting at 98–100.

The ramp is gradual and automatic. The daily limit increases on its own every couple of days, so I haven't had to babysit it. The dashboard is also clear about what's going on. It shows inbox placement, spam rate and whether warmup is arriving, so I'm not guessing.

I haven't launched campaigns yet, so I can't speak to the outreach side. For getting a new domain ready to send, though, it's done exactly what I needed. I'll update this once campaigns are running.