The Safest Infrastructure to Scale Your Cold Email
Don't risk your reputation on unproven tech.
Get Official Google & Microsoft accounts, fully set up and ready to send.
Join 2,000+ agencies scaling with our premium infrastructure.
- Direct Sequencer Integration
- Unlimited Replacement Inboxes
- Guaranteed Setup Time
How Many Cold Email Inboxes
Do You Actually Need?
Tell us your daily volume, we'll tell you exactly what you need - and the cost. Used by 2,000+ agencies and outbound teams.
Your Infrastructure Plan
Based on 500 emails/day with Google Workspace
The "Done-For-You" Deployment Process
Select Your Infrastructure
Choose between Official Google Workspace or Microsoft 365 accounts. We recommend diversifying your volume across both platforms to minimize risk and protect your agency's reputation.
The "Hand-Off"
Spend 2 minutes on our simple intake form to define your domain preferences. That is the last thing you need to do. We handle the technical heavy lifting from here.
Human-Verified Configuration
Our engineers manually configure and verify every DNS record (SPF, DKIM, DMARC). We do not rely on automation alone. We use senior infrastructure engineers to validate your setup.
White-Glove Integration
We upload your inboxes directly into your sequencer (Smartlead, Instantly) and initiate the warm-up process for you. You receive a notification when it's done. Zero technical setup required.
Highlight achievements by the numbers
Premium Inbox Impact in Numbers:
2,000+
Satisfied customers
<6h
Delivery time
440+
Five Star Reviews
250,000+
Inboxes in circulation
Why Premium Inboxes
Official US Infrastructure
We never use "cracked" or "farmed" accounts. You get Official Google Workspace & Microsoft 365 business accounts. This is the only way to ensure long-term domain health.
Complete "Done-For-You" Setup
Stop wasting hours on technical admin. We handle everything. From profile photos to forwarding rules. We act as your backend engineering team so you can focus on closing deals.
Human-Verified DNS
Automated scripts miss things. Our engineers manually verify every record (SPF, DKIM, DMARC) to ensure your authentication is flawless before you send a single email.
Strategic Diversification
Don't put your entire agency at the mercy of one provider. We allow you to split volume between Google and Microsoft, spreading your risk and maximizing deliverability.
The Highest-Rated Infrastructure on Trustpilot
Run Your Whole Inbox Operation on Autopilot
The Premium Inboxes API lets your system create client workspaces, place orders, and manage subscriptions. No tickets. No copy-paste. No waiting on a human.
Onboard Clients in Minutes
A new client signs. Your system creates their workspace and places the order on its own. You never touch a form.
Every Client Cleanly Separated
One workspace per client. Inboxes, domains, and orders stay in their own lane. Run it all under your brand.
Know Before Your Client Asks
Your system pulls order status on its own. You always know where every build stands without logging in.
Scale Clients, Not Headcount
Three clients or forty, the workflow stays the same. Your ops team stops being the bottleneck.
Growth-oriented integration
Empower your business with flexible and growth-oriented integration solutions & technologies
Frequently Asked Questions (FAQs)
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Premium Inboxes is a reseller of Official Google Workspace and Microsoft 365 Business inboxes, built specifically for cold email marketing. As a core component to net new business generation, you need to be seen; we build accounts that are proven to land you directly in your prospects' inboxes. It is a turn-key service, built to be hands-off for you, the customer. Purchase your accounts, complete the onboarding form, sit back and wait!
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Premium Inboxes is for B2B agencies, lead generation firms, and in-house outbound teams who depend on email deliverability for revenue. From 10-inbox startups to 8,000-inbox agencies - if you send cold email at scale, you need infrastructure you can trust.
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Yes. Every Google inbox we provide is a real Google Workspace business account, registered to a real US-based business entity, with valid licensing and full administrative access. We never use cracked, farmed, or grey-market accounts.
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Yes. All Microsoft inboxes are official Microsoft 365 Business accounts with proper licensing, admin access and all standard tenant features available to you.
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We offer a guided migration service. Share your current setup and goals, and our team will plan a phased transfer that protects your sender reputation while moving you to Premium Inboxes infrastructure.
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Standard delivery is under 6 hours. Larger orders (1,000+ inboxes) typically complete within 24 hours. You will receive a notification the moment your accounts are ready and uploaded into your sequencer.
Contact Us
Need assistance or have questions? Don’t hesitate to reach out to us. Our dedicated team is here to help.