The only email warmup tool
that's actually free
AI-powered warmup, inbox placement testing, DNS monitoring, and deliverability intelligence — all included. 1 mailbox free forever. 5 mailboxes for $19/mo.
What others charge per inbox per month
Mailreach
$25/inbox/mo
Instantly
$30/inbox/mo
Lemwarm
$29/inbox/mo
Warmbox
$15/inbox/mo
$0
1 mailbox free forever — or 5 for just $19/mo
Mailboxes warmed
Avg inbox rate
Providers tested
To get started
Everything you need for perfect deliverability
A complete suite of tools to warm, test, monitor, and protect your sender reputation.
AI Warmup Engine
Unique AI-generated multi-turn conversations that look and feel like real emails. No templates, no patterns.
Inbox Placement Testing
Test deliverability across 15+ providers in real-time. Know exactly where your emails land — inbox, spam, or promotions.
DNS Health Audit
Comprehensive SPF, DKIM, DMARC, MX, and BIMI checks with copy-paste fix recommendations.
Blacklist Monitoring
Continuous scanning across 70+ RBLs. Get instant alerts and step-by-step delisting instructions.
AI Copilot
Ask questions about your deliverability in plain English. Get AI-powered diagnostics and one-click fixes.
Adaptive Controller
ML-driven warmup that adjusts volume and timing based on live reputation signals. No manual tuning.
Up and running in minutes
Four simple steps from cold domain to warm inbox.
Connect
One-click OAuth for Gmail and Microsoft 365, or enter SMTP/IMAP credentials. Takes under 60 seconds.
Audit
We instantly check your SPF, DKIM, DMARC, MX records and scan 70+ blacklists. Fix issues before warming.
Warm
AI generates unique conversations with our curated inbox pool. Volume ramps adaptively based on reputation signals.
Monitor
Track your reputation score, inbox placement rates, and get AI-powered recommendations to maintain peak deliverability.
EmailWarmer.io vs. the rest
More features, better AI, lower price. See how we compare.
| Feature | EmailWarmer.io | Mailreach | Instantly | Lemwarm |
|---|---|---|---|---|
| Price (5 mailboxes) | $19/mo | $125/mo | $150/mo | $145/mo |
| Free tier | ||||
| AI-generated content | Multi-turn AI | Templates | GPT basic | Templates |
| Inbox placement tests | Included | Extra $ | Extra $ | |
| DNS monitoring | ||||
| Blacklist monitoring | 70+ RBLs | Basic | ||
| AI Copilot | ||||
| Browser engagement | ||||
| Adaptive controller | ML-driven | Fixed curve | Fixed curve | Fixed curve |
Free to start. Affordable to scale.
Every plan includes AI warmup, placement testing, DNS monitoring, and AI Copilot. No hidden fees, no per-feature upsells.
Free
Free forever
- 1 mailbox
- 20 warmup emails/day
- 1 placement test/week
- Basic DNS checks
- AI Copilot (10 msgs/day)
- Community support
Starter
- 5 mailboxes
- 100 warmup emails/day per inbox
- 20 placement tests/month
- Full DNS & blacklist monitoring
- Unlimited AI Copilot
- Email support
Pro
- 25 mailboxes
- 200 warmup emails/day per inbox
- 100 placement tests/month
- Full DNS + Google Postmaster
- Unlimited AI Copilot (priority)
- Read-only API access
- Priority support
Custom
For agencies & enterprise teams
- Unlimited mailboxes
- Custom warmup volume
- Unlimited placement tests
- White-label dashboard
- Dedicated IP pool
- Custom AI personas
- SSO & SAML
- Dedicated account manager
- SLA guarantee
All paid plans include a 14-day free trial. Cancel anytime. No questions asked.
Trusted by 2,000+ senders
Join teams that care about deliverability.
“Our Gmail inbox placement went from 62% to 94% in three weeks. The AI Copilot caught a DMARC issue we'd missed for months.”
Jordan Mitchell
Sales Lead, TechScale
“We manage 80+ client mailboxes. The agency dashboard and white-label features are a game-changer. Cut our warmup costs by 70%.”
Priya Sharma
Founder, GrowthOps Agency
“The placement tests alone are worth it. We can test every campaign template before sending and see exactly which providers flag it.”
Marcus Chen
Head of Outreach, RecruitFlow
Integrates with your stack
Frequently asked questions
Everything you need to know about EmailWarmer.io
Stop paying $25–$50 per inbox.
Start for free.
Join 2,400+ senders who switched to EmailWarmer.io. Same results, fraction of the cost.
- AI-powered warmup
- Inbox placement testing
- DNS & blacklist monitoring
- AI Copilot diagnostics
- No credit card required