MailDeck
Enterprise Cold Email Infrastructure for high-volume outreach teams.·maildeck.co
MailDeck is a cold email infrastructure provider that manages inboxes, sending domains, and DNS authentication across Microsoft 365 Outlook, Google Workspace, and Private SMTP. It handles SPF/DKIM/DMARC setup, inbox warmup, domain replacement, and ongoing deliverability monitoring for outbound teams. MailDeck is not a sequencer itself; its infrastructure connects to any SMTP-compatible sending tool. Accounts are managed through a dashboard that tracks every inbox, domain, and subscription.
What it's for
Features 17
- 24/7 deliverability audit and priority support
- Automated SPF, DKIM, DMARC configuration for every domain
- Bulk inbox provisioning (100 inboxes per Outlook tenant)
- Cold email infrastructure across Microsoft 365 Outlook, Google Workspace, and Private SMTP
- Connects to any SMTP-compatible sequencer
- Dashboard showing every inbox, domain, and subscription
- Dedicated IP per client for Private SMTP
- Diversified infrastructure stack bundles
- DNS propagation verification before first email is sent
- Free domain replacement when a domain burns
- In-app AI assistant (Maya) for guidance on the cold email stack
- Included inbox warmup
- Individual Azure tenants with dedicated US IP addresses
- Official Google IP pools for Workspace inboxes
- Published operating data on domain burn rates, warmup timelines, and inbox placement
- Real-time monitoring for Private SMTP
- Volume Calculator tool
At a glance
Integrations
Pricing
Outlook tenant plans (Normal, Premium, Mixed, Pre-Warmed) are priced per domain/tenant of 100 inboxes. Google Workspace and Private SMTP plans scale with inbox count, with Private SMTP billed on a tiered per-inbox rate depending on volume. Diversified Stack bundles combine all three infrastructure types at flat monthly prices. A Custom plan for 100+ inboxes per domain is quote-only.
Listed at $45/month, discounted 30% to $30/month per domain as part of a limited-time offer.
100 inboxes per domain; 4-5 cold emails safely per inbox/day; minimum order 2 tenants (200 inboxes, $60/month minimum)
Marked 'Most Popular'. Listed at $55/month, discounted 30% to $40/month per domain.
100 inboxes per domain; 8-10 cold emails safely per inbox/day; minimum order 2 tenants
Listed at $50/month, discounted 30% to $35/month per domain.
100 inboxes per domain (50 Normal + 50 Premium); minimum order 2 tenants
Skips warmup entirely, ready for cold sending immediately
8-10 cold emails safely per inbox/day; ready immediately (0 warmup time)
10 inboxes; 18-22 cold emails safely per inbox/day; warmup 2-3 weeks
30 inboxes; 18-22 cold emails safely per inbox/day
100 inboxes; 18-22 cold emails safely per inbox/day
Dedicated IP per client, Real-time monitoring, Priority support
Minimum order 100 inboxes ($50/month minimum); 5 inboxes per domain; dedicated IP per client; 11-14 cold emails safely per inbox/day
Bundle combining all three infrastructure types.
40,000 cold sends per month
Bundle combining all three infrastructure types.
215,000 cold sends per month
Bundle combining all three infrastructure types.
2,150,000 cold sends per month
Price available on request via Contact Us.
100+ inboxes per domain; custom volume configuration
Limited-time 30% off first order, reducing Outlook licence prices (e.g., Normal License from $45 to $30, Premium from $55 to $40, Mixed from $50 to $35 per month per domain).