Premium Inboxes
Cold outreach inbox infrastructure built on official Google Workspace and Microsoft 365.
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About
Premium Inboxes
Premium Inboxes provides cold outreach infrastructure built on official Google Workspace and Microsoft 365 environments. The platform is designed for agencies, outbound teams, SaaS companies, and operators who rely on cold email as a primary acquisition channel.
Running cold outreach at scale requires more than just sending tools. Domain reputation, authentication, inbox distribution, and proper infrastructure architecture are critical to maintaining deliverability. Premium Inboxes removes that complexity: teams bring their domains and sending tools, while Premium Inboxes handles the technical setup required to safely deploy inboxes for outbound campaigns.
Each setup includes proper domain authentication (SPF, DKIM, and DMARC), structured inbox provisioning with recommended limits per domain, and delivery directly into the client's sequencer such as Smartlead or Instantly. Provisioning is typically completed within 12 hours once onboarding requirements are submitted.
What they offer
Services and products
Google Workspace Inbox Infrastructure
Microsoft 365 Inbox Infrastructure
Domain Authentication (SPF, DKIM, DMARC)
Cold Email Deliverability Setup
Outbound Email Infrastructure Architecture
Inbox Provisioning & Deployment
The founder
Who's behind it
At a glance
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