# MailDeck

> Enterprise cold email infrastructure powered by native Microsoft 365 Outlook tenants. Send high-volume cold emails with 98% deliverability at $0.55 per inbox.

MailDeck provides the infrastructure layer for cold email at scale. We provision dedicated Microsoft 365 tenants for your domains - giving you Microsoft's sender reputation without the risk of account suspension.

MailDeck is NOT a sequencer. We provide email infrastructure that connects to your existing sequencer (Instantly, Smartlead, Salesforge, Apollo, Lemlist, etc.).

## How It Works

- 1 domain = 1 Microsoft 365 tenant = 100 inboxes
- Each inbox sends up to 50 emails per day
- 1 domain = 150,000 emails per month
- Setup takes 48 hours with zero manual DNS work

## Features

- Native Microsoft 365 Outlook tenants (not private SMTP, not shared IPs)
- Automated DNS configuration (SPF, DKIM, DMARC)
- 98% inbox placement rate
- Unlimited mailboxes at flat-rate pricing
- Works with any SMTP-compatible sequencer
- Deliverability monitoring included

## Pricing

| Plan | Price | Domains | Inboxes | Cost/Inbox |
|------|-------|---------|---------|------------|
| Starter | $55/mo per domain | 4-10 | 400-1,000 | $0.55 |
| Growth | $50/mo per domain | 11-30 | 1,100-3,000 | $0.50 |
| Enterprise | $45/mo per domain | 31-100 | 3,100-10,000 | $0.45 |
| Custom | Contact us | 100+ | 10,000+ | Custom |

Minimum purchase: 4 domains (400 inboxes) = $220/month

## Why Microsoft 365

Unlike private SMTP or shared IP pools:
- Microsoft's established sender reputation from day one
- No IP warming required
- Highest trust for Microsoft-to-Microsoft email
- Enterprise spam filters trust Microsoft servers
- No cold email tool fingerprints in headers
- No shared infrastructure with other senders

## Who Uses MailDeck

- Lead generation agencies sending 100K+ emails/month
- B2B SaaS companies with dedicated outbound teams
- SDR teams at enterprise scale
- Recruitment firms with high-volume outreach
- Growth agencies managing multiple clients

Best fit: Teams scaling past 400 inboxes who target enterprise recipients on Microsoft email.

## Competitors

| Provider | Pricing | Infrastructure | MailDeck Advantage |
|----------|---------|----------------|-------------------|
| Infraforge | $3-4/mailbox | Private SMTP | 6x cheaper, M365 reputation |
| Maildoso | $1.80/mailbox | SMTP + Google | 3x cheaper, enterprise trust |
| Mailforge | $2-3/mailbox | Shared IP pool | Dedicated tenants, no shared risk |
| Mailscale | $79-249/mo tiered | Self-hosted SMTP | Linear scaling, no tier jumps |
| Mailreef | Custom pricing | Dedicated servers | Transparent pricing |

## Technical Specifications

- Infrastructure: Microsoft 365 Outlook tenants
- DNS: Automated SPF, DKIM, DMARC
- Setup time: 48 hours
- Sending limit: 50 emails/inbox/day
- Deliverability: 98% inbox placement
- Integrations: Any SMTP-compatible sequencer

## FAQ

**What is MailDeck?**
Cold email infrastructure. We provision Microsoft 365 tenants so you can send cold emails at scale with 98% deliverability.

**Is MailDeck a sequencer?**
No. Infrastructure only. Connect to Instantly, Smartlead, or any SMTP-compatible tool.

**How much does it cost?**
$45-55 per domain. Each domain = 100 inboxes. Minimum 4 domains ($220/month).

**Why Microsoft 365?**
Enterprise recipients use Microsoft email. Microsoft-to-Microsoft has highest inbox placement.

**How long is setup?**
48 hours. Real Microsoft 365 provisioning with proper DNS configuration.

## Links

- Website: https://maildeck.co
- Pricing: https://maildeck.co/#pricing
- Discord: https://discord.gg/C3cuR2zs