# WarmInboxes.com

> Prewarmed and unwarmed Google Workspace, Microsoft 365, and Azure email inboxes for cold email campaigns. Free .com domains included on every package. DNS setup (SPF, DKIM, DMARC) handled before you log in. Start sending the same day.

WarmInboxes.com is the email infrastructure layer used by B2B sales teams, cold email agencies, and SaaS companies. Built by operators sending 1M+ cold emails/month. Endorsed by Instantly, Smartlead, and Clay certified experts.

## Key Pages

- [Home](https://warminboxes.com/): Service overview, pricing, testimonials, FAQ
- [Offer](https://warminboxes.com/offer): Full product details and package comparison
- [Reviews](https://warminboxes.com/reviews): 150+ verified customer reviews (4.9/5)
- [Deliverability](https://warminboxes.com/deliverability): Infrastructure approach and deliverability data
- [Blog](https://warminboxes.com/blog): 45+ expert guides on cold email and outbound strategy
- [Playbooks](https://warminboxes.com/playbooks): Step-by-step outbound execution guides
- [Calculator](https://warminboxes.com/calculator): Email infrastructure sizing and ROI calculator
- [Consultation](https://warminboxes.com/consultation): Book a free deliverability audit
- [Deliverability Tools Hub](https://warminboxes.com/deliverability-tools): All free tools in one place

## Free Tools

- [Blacklist Checker](https://warminboxes.com/blacklist-checker): Check domain/IP against 20+ email blacklists
- [Deliverability Checker](https://warminboxes.com/deliverability-checker): Test inbox placement rate
- [DMARC Checker](https://warminboxes.com/dmarc-checker): Validate DMARC record and policy
- [SPF Checker & Generator](https://warminboxes.com/spf-checker): Look up or build SPF records
- [DNS Checker](https://warminboxes.com/dns-checker): Query all DNS record types
- [Domain Expiry Checker](https://warminboxes.com/domain-expiry-checker): Monitor domain expiration

## Full Documentation

- [Complete LLM documentation](https://warminboxes.com/docs/llms-full.txt): Detailed product, pricing, FAQ, and technical specs
- [AI info file](https://warminboxes.com/ai.txt): Q&A format overview for AI assistants

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## What We Do

WarmInboxes.com provides two types of email infrastructure:

### 1. Prewarmed Inboxes (instant use)
Email accounts with an established sending history and positive engagement signals — trusted by Gmail, Outlook, and other providers from day one. No warmup wait. Start sending immediately.

### 2. Unwarmed Inboxes (Google Workspace / Microsoft 365 / Azure)
Lower-cost inboxes and domains for long-term volume and control. Require 2–3 week warmup period. All DNS records configured before delivery.

### What is included in every package
- Free prewarmed .com domain (saves $12/domain)
- SPF, DKIM, DMARC, and forwarding configured
- US + EU IP infrastructure
- Admin access to all mailboxes
- 24/7 WhatsApp support from real operators

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## Pricing

### Prewarmed Inbox Packages (monthly)
| Package | Inboxes | Price/month | Includes |
|---------|---------|-------------|---------|
| Starter | 3 prewarmed inboxes | $21 | Free .com domain + DNS setup |
| Growth | 6 prewarmed inboxes | $42 | Free .com domain + DNS setup |
| Scale | 9 prewarmed inboxes | $63 | Free .com domain + DNS setup |
| Pro | 15 prewarmed inboxes | $99 | Free .com domain + DNS setup |

### Google Workspace Unwarmed (per inbox/month)
| Volume | Monthly | Quarterly | Yearly |
|--------|---------|-----------|--------|
| No minimum | $3.50 | $3.25 | $3.00 |
| Min 30 inboxes | $3.30 | $3.00 | $2.50 |
| Min 100 inboxes | $3.00 | $2.50 | $2.00 |

### Microsoft 365 / Azure Unwarmed (per inbox/month)
| Volume | Monthly | Quarterly | Yearly |
|--------|---------|-----------|--------|
| No minimum | $3.50 | $3.25 | $3.00 |
| Min 30 inboxes | $3.30 | $3.00 | $2.50 |
| Min 100 inboxes | $3.00 | $2.50 | $2.00 |

Domain purchases: .com domains available for $12 USD each (free with prewarmed packages).

---

## Frequently Asked Questions

**What are prewarmed email inboxes?**
Email accounts gradually conditioned to send at scale without triggering spam filters. Ready to use immediately with 90%+ deliverability — no warmup wait.

**How long until I can start sending?**
Prewarmed inboxes: same day. Unwarmed Google/Microsoft inboxes: 2–3 weeks of warmup required.

**What deliverability rates can I expect?**
Prewarmed inboxes consistently achieve 90%+ inbox placement. Diversified across US + EU IPs so one blacklisted range never kills your pipeline.

**Do I need my own domain?**
No. A free prewarmed .com domain is included with every prewarmed package. You can also bring your own domain.

**What cold email tools are compatible?**
Works with Instantly, Smartlead, Lemlist, Apollo, Clay, and any tool accepting SMTP credentials.

**Do I get full mailbox access?**
Yes — full admin access to all email accounts.

**Is there a refund policy?**
No refunds. Review terms before purchasing or contact support with questions.

**What's the sending limit per inbox?**
Each prewarmed inbox can safely handle 50–100 emails per day.

**Is this GDPR compliant?**
The infrastructure is GDPR compliant. Users must ensure their campaign content follows GDPR guidelines.

---

## Trust Signals

- 150+ verified reviews, 4.9/5 rating
- $10M+ pipeline generated by customers
- 6,700+ B2B contracts closed using our infrastructure
- 1M+ emails/month sent across customer base
- Instantly Certified Expert
- Smartlead Certified Partner
- Clay Experts

## Customer Results

- 2,338,200 emails sent · 4.87% reply rate · $6,902,978 in pipeline
- 1,310,300 emails sent · 4.41% reply rate · $3,301,591 in pipeline
- 279,500 emails sent · 4.61% reply rate · $1,025,058 in pipeline
- 790 sequences · 15.44% reply rate · $305,000 in pipeline

## Compatible With

Instantly, Smartlead, Lemlist, Apollo, Clay, and all SMTP-compatible cold email platforms.

---

## Contact

- Website: https://warminboxes.com
- App / sign up: https://app.upscaleb2b.com
- Phone: +1-904-736-2539
- Email: support@warminboxes.com
- WhatsApp: https://wa.me/19047362539
- YouTube: https://www.youtube.com/@huzupscale
- Instagram: https://www.instagram.com/warm_inboxes/
- LinkedIn: https://www.linkedin.com/company/warminboxes