Cold Email Infrastructure Built for Scale

The world's most reliable inbox architecture for cold email teams sending 100k+ monthly. Zero configuration. Total deliverability control.

650K+ Inboxes Managed · 1500+ Global Clients

Order Inboxes

How MailDeck Works

MailDeck provides fully configured, official Microsoft inboxes for reliable cold email outreach without the hassle of technical setup or high costs.

48-Hour Onboarding

Our automated system handles the technical architecture, allowing you to focus on your outreach strategy while we ensure optimal deliverability.

What Our Clients Say

Trusted by 1500+ agencies, solopreneurs, and SaaS founders worldwide.

Pricing

Enterprise cold email infrastructure starting from $45/month. Flat-rate pricing with unlimited mailbox creation.

Get Started

Ecosystem

MailDeck inboxes are compatible with popular outreach tools, including Instantly, Smartlead, and all existing email sending platforms.

Frequently Asked Questions

What is MailDeck?
MailDeck provides fully configured, official Microsoft inboxes for reliable cold email outreach without the hassle of technical setup or high costs.
How Does MailDeck Guarantee Deliverability?
MailDeck guarantees all accounts to be configured with optimal DNS, DKIM, and SPF settings to enhance deliverability. Additionally, we actively monitor deliverability rates and DMARC records.
Can I Bring My Own Domain?
Absolutely, you can bring your own domains or if you need help picking domains, we will provide you them as well at $12/domain.
Does MailDeck Work with My Outreach Tool?
MailDeck inboxes are compatible with popular outreach tools, including Instantly, Smartlead, and all existing email sending platforms.
Recommended Amount of Sending?
To avoid spam filters, each inbox should send only 5 cold emails per day. With multiple inboxes, you can scale your outreach efficiently.
What's the Process?
Choose the amount of inboxes you need, fill in our form, and MailDeck orders the inboxes from Microsoft, fully configures DNS records and adds them to your email sending platform.
How to Cancel?
Cancel anytime by accessing your account settings. No long-term contracts required.