ScaledMail offers managed cold email infrastructure across Google Workspace, Microsoft Outlook, and SMTP with dedicated Slack support. MailDeck covers the same three infrastructure types at a lower per-inbox cost, with 100 Outlook inboxes per tenant versus ScaledMail's 25 per domain. Both serve high-volume cold email operations, but the pricing and scale mechanics differ significantly.
MailDeck manages 833K+ inboxes across Microsoft 365, Google Workspace, and SMTP for 1,631+ clients, sending 7.5M+ emails per day with a 98% inbox placement rate. Based on Q2 2026 MailDeck platform data.
ScaledMail pricing verified on scaledmail.com/pricing as of May 2026.
For a broader comparison, see our pricing analysis of 11 cold email providers.
Quick Comparison
| MailDeck | ScaledMail | |
|---|---|---|
| Infrastructure types | Microsoft 365 + Google Workspace + SMTP | Google + Microsoft + SMTP |
| Outlook cost per inbox | $0.30 (Normal) | $2.00 ($50/domain, 25 inboxes) |
| Google cost per inbox | $2.99-3.90 | $3.50 |
| SMTP cost per inbox | $0.40-0.50 | ~$0.94 ($3.75/domain, 4 inboxes) |
| Outlook inboxes per domain | 100 | 25 |
| Minimum purchase | $39/mo (10 Google inboxes) | No stated minimum |
| Setup time | Instant (Google), 24h (SMTP), 2-3 days (Outlook) | 24-72 hours |
| Support | Standard | Dedicated Slack channel |
| DNS configuration | Automated SPF, DKIM, DMARC | Full DNS authentication |
| Sequencer integration | All SMTP-compatible tools | All SMTP-compatible tools |
Pricing Comparison
ScaledMail Pricing
| Product | Price | Inboxes per domain | Cost per inbox |
|---|---|---|---|
| Google Workspace | $3.50/mailbox | 2-3 | $3.50 |
| Microsoft Outlook | $50/domain | 25 | $2.00 |
| SMTP Server | $3.75/domain | 4 | ~$0.94 |
Reporting add-on: $2/mailbox (Google/SMTP) or $5/domain (Outlook). No contracts. Dedicated Slack support included.
MailDeck Pricing
Outlook Normal: $30/tenant (100 inboxes), $0.30/inbox.
Outlook Premium: $40/tenant (100 inboxes), $0.40/inbox. 8-10 cold sends/day/inbox.
Pre-Warmed Outlook: $30/tenant (100 inboxes), $0.30/inbox. Zero warmup.
Google Workspace: Start Up 10 inboxes $39/mo ($3.90/inbox) | Growth 30 inboxes $99/mo ($3.30/inbox) | Enterprise 100 inboxes $299/mo ($2.99/inbox).
Private SMTP: 1-1,000 inboxes $0.50/inbox | 1,001-5,000 $0.45/inbox | 5,001+ $0.40/inbox. Dedicated IP per client.
Head-to-Head: Outlook at Scale
| Scale | ScaledMail Outlook | MailDeck Outlook Normal | Annual savings |
|---|---|---|---|
| 200 inboxes | $400/mo (8 domains) | $60/mo (2 tenants) | $4,080/yr |
| 500 inboxes | $1,000/mo (20 domains) | $150/mo (5 tenants) | $10,200/yr |
| 1,000 inboxes | $2,000/mo (40 domains) | $300/mo (10 tenants) | $20,400/yr |
At 1,000 Outlook inboxes, MailDeck saves $20,400 per year. MailDeck also requires 10 domains versus ScaledMail's 40, reducing DNS management overhead by 75%.
Head-to-Head: SMTP at Scale
| Scale | ScaledMail SMTP | MailDeck SMTP | Annual savings |
|---|---|---|---|
| 100 inboxes | $93.75/mo (25 domains) | $50/mo | $525/yr |
| 500 inboxes | $468.75/mo (125 domains) | $250/mo | $2,625/yr |
| 1,000 inboxes | $937.50/mo (250 domains) | $500/mo | $5,250/yr |
MailDeck SMTP is cheaper at every scale and requires fewer domains (5 inboxes per domain versus ScaledMail's 4).
Infrastructure Differences
MailDeck: 100 Inboxes Per Outlook Tenant
MailDeck provisions dedicated Microsoft 365 tenants with 100 inboxes per domain, Google Workspace accounts with 5 inboxes per domain, and Private SMTP with 5 inboxes per domain and dedicated IPs per client. Outlook tenants route through official Microsoft Azure IP pools. Google uses official Google IP pools.
The 100-inboxes-per-tenant model means fewer domains to manage. At 1,000 Outlook inboxes, MailDeck needs 10 domains. ScaledMail needs 40. Fewer domains means less DNS configuration, fewer burn signals to monitor, and simpler infrastructure management. For DNS setup details, see our SPF, DKIM, DMARC configuration guide.
ScaledMail: Managed Service with Slack Support
ScaledMail manages Google Workspace, Microsoft Outlook, and SMTP with 24-72 hour setup and dedicated Slack channels. Their Outlook product provides 25 mailboxes per domain with up to 10 emails/mailbox/day. They include deliverability monitoring and managed mailbox provisioning.
The managed service model works well for teams that want hands-on support and prefer having infrastructure managed by an external team rather than self-service.
Where MailDeck Falls Short
Two objective disadvantages compared to ScaledMail as an inbox provider.
Google Workspace pricing at small scale. ScaledMail charges $3.50/mailbox for Google Workspace. MailDeck's Start Up tier costs $3.90/inbox for the first 10 inboxes. At fewer than 30 Google inboxes, ScaledMail is cheaper per inbox. At 100+ inboxes, MailDeck's Enterprise tier drops to $2.99/inbox, making MailDeck cheaper at scale.
Dedicated Slack support. ScaledMail provides dedicated Slack channels for ongoing support and managed provisioning. MailDeck offers standard support channels. For teams that need hands-on infrastructure management, ScaledMail's service model includes more direct communication.
Where MailDeck Wins
Lower Outlook cost with 4x more inboxes per domain. MailDeck Outlook Normal costs $0.30/inbox with 100 inboxes per tenant. ScaledMail Outlook costs $2.00/inbox with 25 per domain. MailDeck is 6.7x cheaper per inbox and provides 4x more inboxes per domain. At 1,000 inboxes, that gap equals $20,400/year in savings.
Lower SMTP cost. MailDeck SMTP costs $0.40-0.50/inbox with dedicated IPs per client. ScaledMail SMTP costs approximately $0.94/inbox ($3.75/domain, 4 inboxes). MailDeck is roughly half the price and provides 5 inboxes per domain versus ScaledMail's 4.
Fewer domains at scale. At 1,000 Outlook inboxes, MailDeck requires 10 domains versus ScaledMail's 40 domains. Fewer domains means less DNS overhead, fewer configurations to maintain, and fewer burn signals to track. For infrastructure planning, see our inbox calculator.
Official provider IP pools. MailDeck Outlook inboxes route through official Microsoft IP pools, whitelisted by default on corporate mail servers. Google Workspace uses official Google IP pools. MailDeck maintains 98% inbox placement across 833K+ managed inboxes based on Q2 2026 platform data.
Pre-Warmed Outlook available. MailDeck offers Pre-Warmed Outlook at $0.30/inbox with zero warmup and 8-10 cold sends/day from day one.
MailDeck Full Pricing
Outlook Normal Licence
| Tenants | Price per tenant | Inboxes | Cost per inbox |
|---|---|---|---|
| 2+ | $30/tenant | 100 per tenant | $0.30 |
Setup: 2-3 days. Warmup: 5-7 days. Cold sends: 3-5/day/inbox.
Outlook Premium Licence
| Tenants | Price per tenant | Inboxes | Cost per inbox |
|---|---|---|---|
| 2+ | $40/tenant | 100 per tenant | $0.40 |
Setup: 2-3 days. Warmup: 3-5 days. Cold sends: 8-10/day/inbox.
Pre-Warmed Outlook
| Tenants | Price per tenant | Inboxes | Cost per inbox |
|---|---|---|---|
| 2+ | $30/tenant | 100 per tenant | $0.30 |
Zero warmup. Ready immediately. Cold sends: 8-10/day/inbox.
Google Workspace
| Plan | Inboxes | Monthly price | Cost per inbox |
|---|---|---|---|
| Start Up | 10 | $39/mo | $3.90 |
| Growth | 30 | $99/mo | $3.30 |
| Enterprise | 100 | $299/mo | $2.99 |
Setup: Instant. Warmup: 2-3 weeks. Cold sends: 18-22/day/inbox. 5 inboxes per domain.
Private SMTP
| Volume | Cost per inbox |
|---|---|
| 1-1,000 inboxes | $0.50 |
| 1,001-5,000 inboxes | $0.45 |
| 5,001+ inboxes | $0.40 |
Setup: 24 hours. Warmup: 3-4 weeks. Cold sends: 11-14/day/inbox. Dedicated IP per client.
All plans include automated DNS configuration (SPF, DKIM, DMARC).
FAQ
How much does ScaledMail cost?
ScaledMail charges $3.50/mailbox for Google Workspace (2-3 mailboxes per domain), $50/domain for Microsoft Outlook (25 mailboxes per domain, $2.00/mailbox), and $3.75/domain for SMTP (4 mailboxes per domain, ~$0.94/mailbox). Reporting add-on costs $2/mailbox (Google/SMTP) or $5/domain (Outlook). Setup takes 24-72 hours. Pricing verified on scaledmail.com as of May 2026.
How does MailDeck compare to ScaledMail on price?
MailDeck Outlook Normal costs $0.30/inbox (100 inboxes per tenant) versus ScaledMail's $2.00/inbox (25 per domain). At 500 Outlook inboxes, MailDeck costs $150/month versus ScaledMail's $1,000/month. MailDeck SMTP costs $0.50/inbox versus ScaledMail's ~$0.94/inbox. MailDeck Google starts at $2.99/inbox versus ScaledMail's $3.50/mailbox.
How many inboxes per domain does each provider offer?
MailDeck Outlook tenants include 100 inboxes per domain. ScaledMail Outlook includes 25 mailboxes per domain. For Google, MailDeck provides 5 inboxes per domain; ScaledMail provides 2-3 per domain. For SMTP, MailDeck provides 5 per domain; ScaledMail provides 4 per domain.
Can I use MailDeck with Instantly or Smartlead?
Yes. MailDeck is infrastructure only and provides SMTP credentials that work with any sequencer: Instantly, Smartlead, Saleshandy, Apollo, Lemlist, Woodpecker, Reply.io, Snov.io, QuickMail, GMass, and any other SMTP-compatible tool.
Does ScaledMail offer dedicated Slack support?
Yes. ScaledMail provides dedicated Slack support, managed mailbox provisioning, and deliverability monitoring as part of their service. MailDeck offers standard support channels. If dedicated account management is a priority, ScaledMail's service model may be a better fit.
Which provider is cheaper for Google Workspace inboxes?
At small scale (under 30 inboxes), ScaledMail's $3.50/mailbox is cheaper than MailDeck's Start Up tier at $3.90/inbox. At 100+ inboxes, MailDeck's Enterprise tier drops to $2.99/inbox versus ScaledMail's flat $3.50. For Google Workspace specifically, the cost advantage depends on volume.
Methodology
ScaledMail pricing verified on scaledmail.com/pricing as of May 2026. MailDeck pricing from published rates at maildeck.co. MailDeck platform data based on Q2 2026 metrics: 833K+ managed inboxes, 1,631+ clients, 7.5M+ daily emails, 270M+ cold emails sent lifetime, 3,000+ domains under management, 98% inbox placement rate.
Last updated: May 2026
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