The warmup engine actually works and reports real numbers, not vanity metrics. Across 6 mailboxes on 3 domains we're seeing over 97% inbox placement and a 0.2% bounce rate. What stood out most is the automatic throttling: when one mailbox's warmup mail started landing in spam, WarmySender cut its volume on its own to let reputation recover, instead of letting me find out the hard way through a real campaign. That's the kind of protection that's easy to undervalue until you've been burned by a domain going dark. The lifetime deal pricing also makes it a strong value for building real sending infrastructure rather than a one-off tool. Review collected by and hosted on G2.com.

The lead database has a real gap between browsing and saving results: searching is free, but saving a lead consumes a reveal credit, and that distinction isn't obvious the first time you use it. Mailbox connection also assumes you're comfortable with your provider's 2FA and app-password flow, which added real time to onboarding, though that's more the email provider's process than WarmySender's own UI. Review collected by and hosted on G2.com.