Email deliverability
From $19/mo
Email Warmup
SMTP warmup service. Build sender reputation, escape spam folders. From $9/month — 3× cheaper than Lemwarm.
Connect your SMTP account and ZeroPhantom warms it up automatically with realistic email patterns — sends, opens, replies, spam-folder rescues. Gradual ramp-up schedules protect your domain reputation. Fully managed in the cloud.
From $19/month
Instant activation
Cloud-managed warmup
No crypto required