Engineered Specifically for B2B Cold Outreach Infrastructure
Standard business productivity email providers are built for daily team chats. WarmedInboxes delivers dedicated, pre-warmed outreach mailboxes on your own domain built for high-volume B2B sales development.
The Outreach Infrastructure Dilemma
Traditional email suites were engineered for 1-to-1 office communication. When sales development teams launch high-volume cold outreach campaigns on standard office mailboxes, accounts frequently trigger strict rate limits, policy suspensions, or months of tedious manual domain warming.
WarmedInboxes was created to eliminate this friction. We manage the underlying mailbox infrastructure, pre-warming, and DNS alignment on your own business domain so your team can focus entirely on closing deals.
How We Power Your Campaigns
Your Domain Identity
Keep 100% brand control on your own domain with custom SPF, DKIM, and DMARC records.
Pre-Warmed & Active Warmup
Mailboxes are prepared before delivery, with ongoing warmup included while the mailbox stays active.
Single-Pane Dashboard
Monitor mailbox health, sending status, and export credentials with 1-click CSV downloads.
Our 3 Infrastructure Pillars
Built from the ground up to protect domain health and scale cold email volume.
1. Domain Protection
We separate sending traffic across dedicated IP infrastructure and enforce strict domain-to-IP socket limits to protect primary domain reputation.
2. Inclusive Warmup Model
Warmup support is included at no additional charge while your mailbox remains active with WarmedInboxes, preserving sender score over long-term campaigns.
3. Universal Compatibility
Standard SMTP and IMAP protocol access allows seamless connections to Instantly, Smartlead, Lemlist, Apollo, or custom outreach tools.
Ready to Scale Your Outreach Setup?
Get pre-warmed mailboxes for $2.50 each on your own domain with full dashboard control.