The Infrastructure Behind Serious B2B Cold Outreach
Deploy pre-warmed outreach mailboxes on your own domain with managed infrastructure, dedicated IP support, and a customer dashboard built for B2B outreach.
QUICK DEPLOYMENT
Select Quantity
TOTAL MONTHLY PRICE
$62.50 /mo
$2.50 / mailbox / month
Pre-Warmed Infrastructure
Prepared before delivery
Your Own Domain
Full SPF / DKIM alignment
Dedicated IP Support
According to configuration
Customer Dashboard
Single-pane portal control
Built Specifically for Cold Outreach Infrastructure
Standard office mailboxes lock when sending cold campaigns. We provide managed infrastructure on your domain.
How We Safeguard Your Domain & IP Reputation
Standard email providers punish cold email senders. WarmedInboxes enforces multi-layered deliverability guards directly on Postfix mail servers.
IP Socket Isolation
We enforce a strict rule of 6 domains per IP socket. This prevents high sending volumes from polluting single IP pools or triggering provider connection blocks.
Auto-Guard Bounce Protection
Our real-time log parser monitors recipient bounce rates. If invalid lead lists exceed 15.0% bounces, relay triggers Auto-Guard to protect domain reputation.
Smart Sample Safety & 1-Click Unblock
Accounts sending under 25 emails are protected from early small-sample blocks. Plus, users can unblock mailboxes with 1-click from the Client Portal.
Your Domain. Your Brand.
Keep your own domain and brand identity while WarmedInboxes manages the mailbox infrastructure behind your outreach setup.
How WarmedInboxes Works
Your domain, our managed outreach infrastructure.
Your Domain
You provide your own business domain.
Mailbox Provisioning
WarmedInboxes provisions the managed outreach mailboxes.
Pre-Warming
Mailboxes are prepared before active outreach.
Sending Infrastructure
Mailboxes use the assigned sending infrastructure.
Client Dashboard
Manage and monitor your mailbox setup from your dashboard.
Connect & Start
Connect your mailbox to your supported outreach platform and launch your campaigns.
Your Mailboxes. One Dashboard.
Manage your outreach mailbox infrastructure from one place. Monitor active mailboxes, warmup status, domain settings, and connection details in real-time.
Mailboxes
25 Active
Warmup
● Active
Mailbox Health
● Healthy
Domains
5
IP Infrastructure
Dedicated
Platform
Instantly / Supported
WarmedInboxes vs Traditional Setup
Compare managing outreach infrastructure yourself versus receiving managed pre-warmed accounts.
Managed & Pre-Warmed
Everything is engineered specifically around B2B cold outreach workflows.
- ✓Pre-warmed mailboxes prepared before delivery
- ✓Warmup included while your mailbox stays active
- ✓Use your own business domain with DNS blueprint guidance
- ✓Dedicated infrastructure according to configuration
- ✓Single-pane customer dashboard with 1-click CSV export
Build It Yourself
Customer handles all technical setup, warming, and management manually.
- ✕Manual mailbox provisioning and account creation
- ✕14+ days delay building domain sending reputation from zero
- ✕Manual DNS configuration and technical troubleshooting
- ✕Infrastructure decisions left to non-technical teams
- ✕Multiple separate tools and dashboards to monitor
Works With Every Outreach Tool
Connect your WarmedInboxes mailboxes to your supported outreach platform using standard SMTP/IMAP credentials or 1-click CSV export. Third-party outreach platform subscriptions are separate.
Instantly.ai
1-Click CSV Upload
Smartlead.ai
Bulk IMAP / SMTP
Lemlist
Standard Auth
Apollo.io
Custom Mailbox Connection
Mailshake
SMTP/IMAP Import
Breakcold
Direct Integration
Woodpecker
Standard Credentials
Custom Scripts
Direct Relay Connections
From Order to Outreach, Without the Busywork
WarmedInboxes handles the mailbox infrastructure, pre-warming, and DNS alignment behind your setup.
Automated Mailbox Provisioning
Receive your pre-warmed mailbox details with complete SMTP and IMAP credentials. Export credentials with a single click to import into Instantly or Smartlead.
Pre-Warmed Mailboxes
Mailboxes are prepared before delivery. Warmup remains included while your mailbox stays active.
Mailbox Health
● 100% Healthy
Warmup Included While Active
Zero DNS Headaches, Fully Aligned
v=spf1 include:_spf.warmedinboxes.com ~all
RSA 2048-bit Cryptographic Key
v=DMARC1; p=quarantine; pct=100;
Simple $2.50 Mailbox Pricing Calculator
Calculate your monthly price, domain setup recommendations, and daily send capacity.
RECOMMENDED DOMAINS
5 domains
ESTIMATED SENDING CAPACITY
750 – 1250/day
Warmup Included While Your Mailbox Is Active
Every active WarmedInboxes mailbox includes warmup support at no additional warmup charge. Third-party outreach platform subscriptions are separate.
TOTAL MONTHLY PRICE
$62.50 /mo
25 MAILBOXES × $2.50
Ready to Scale Your Outreach?
Get pre-warmed outreach mailboxes for $2.50 each on your own domain with managed infrastructure and a dedicated dashboard.