Mailin builds cold email infrastructure on private dedicated servers with dedicated IPs, starting at $1.20 per mailbox. MailDeck provides three infrastructure types under one provider: Microsoft 365 Outlook at $0.30/inbox, Google Workspace at $2.99/inbox, and Private SMTP at $0.40/inbox. The core difference is IP model: Mailin provisions its own servers. MailDeck routes through official Microsoft and Google IP pools.
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.
Mailin pricing verified on mailin.ai as of May 2026.
This comparison covers pricing at every scale, the infrastructure tradeoffs, and where each provider makes more sense. For a broader view, see our pricing analysis of 11 cold email providers.
Quick Comparison
| MailDeck | Mailin | |
|---|---|---|
| Infrastructure types | Microsoft 365 + Google Workspace + SMTP | SMTP + Google + Microsoft (private servers) |
| Cost per inbox (lowest) | $0.30 (Outlook Normal) | ~$1.20 (advertised) |
| IP model | Official Microsoft/Google pools + dedicated SMTP | Private dedicated servers and IPs |
| Minimum purchase | $39/mo (10 Google inboxes) | $299/mo (200 accounts) |
| Setup time | Instant (Google), 24h (SMTP), 2-3 days (Outlook) | 10-min onboarding, 1-day delivery |
| Warmup time | 0 days (Pre-Warmed) to 3-4 weeks (SMTP) | Varies |
| Sends per inbox per day | 3-22 (varies by type) | Varies by plan |
| DNS configuration | Automated SPF, DKIM, DMARC | Automated SPF, DKIM, DMARC |
| Sequencer integration | All SMTP-compatible tools | All SMTP-compatible tools |
| Inboxes per domain | 5 (Google/SMTP) to 100 (Outlook) | Varies |
Pricing Comparison
Mailin Pricing
| Plan | Accounts | Monthly cost | Cost per inbox |
|---|---|---|---|
| Solopreneur | 200 | $299/mo | ~$1.50 |
| Business | 500 | $749/mo | ~$1.50 |
| Enterprise | 1,000 | $1,499/mo | ~$1.50 |
Enterprise allows unlimited additional accounts at $1 each. Mailin advertises $1.20/mailbox on their homepage.
MailDeck Pricing
Outlook Normal: $30/tenant (100 inboxes), $0.30/inbox. Min 2 tenants ($60/mo).
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, ready immediately.
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 at Scale
| Scale | Mailin | MailDeck (Outlook Normal) | Annual savings |
|---|---|---|---|
| 200 inboxes | $299/mo | $60/mo (2 tenants) | $2,868/yr |
| 500 inboxes | $749/mo | $150/mo (5 tenants) | $7,188/yr |
| 1,000 inboxes | $1,499/mo | $300/mo (10 tenants) | $14,388/yr |
At 1,000 inboxes, MailDeck Outlook Normal saves $14,388 per year. Even comparing MailDeck's SMTP product ($500/mo at 1,000 inboxes) to Mailin ($1,499/mo), the annual gap is $11,988.
Mailin's minimum is $299/month for 200 accounts. MailDeck's lowest entry point is 10 Google Workspace inboxes at $39/month.
Infrastructure Differences
MailDeck: Official Provider IP Pools
MailDeck provisions dedicated Microsoft 365 tenants, Google Workspace accounts, and Private SMTP inboxes. Outlook tenants route through official Microsoft Azure IP pools, whitelisted by default across virtually every receiving server. Google Workspace uses official Google IP pools with the highest trust score of any provider globally. SMTP uses dedicated IPs per client.
Each Outlook tenant includes 100 inboxes with automated SPF, DKIM, and DMARC configuration. Microsoft-to-Microsoft email receives higher trust from corporate spam filters, which matters when your recipients sit behind Exchange servers. For DNS setup details, see our SPF, DKIM, DMARC configuration guide.
Mailin: Private Dedicated Servers
Mailin provisions private dedicated servers with their own IPs, separated per user. They support SMTP, Google, and Microsoft infrastructure with a done-for-you management option. Their deliverability guarantee provides a contractual assurance.
Private server infrastructure works well for teams that want full control over their sending environment and prefer separated infrastructure with contractual guarantees.
Where MailDeck Falls Short
Two objective disadvantages compared to Mailin as an inbox provider.
Outlook setup takes longer. Mailin advertises 10-minute onboarding with 1-day delivery. MailDeck Outlook tenants take 2-3 days for full provisioning with DNS verification. MailDeck Google Workspace provisions instantly, and SMTP is ready in 24 hours. For teams that need Outlook inboxes running today, Mailin delivers faster.
No contractual deliverability guarantee. Mailin offers a deliverability guarantee as part of their service. MailDeck maintains 98% inbox placement across 833K+ managed inboxes but does not offer contractual guarantees.
Where MailDeck Wins
Lower cost at every scale. MailDeck Outlook Normal costs $0.30/inbox. At 500 inboxes, that is $150/month versus Mailin's $749/month. At 1,000 inboxes, the annual savings reach $14,388. The cost gap holds across every MailDeck product line.
Three infrastructure types under one provider. Mailin offers multiple infrastructure types through private servers. MailDeck provides each type natively: Microsoft 365 with official Microsoft IPs, Google Workspace with official Google IPs, and SMTP with dedicated IPs per client. Teams can match infrastructure to their target audience and diversify sending across providers.
Official provider IP pools. MailDeck Outlook and Google Workspace inboxes route through official Microsoft and Google IP pools. These IPs carry institutional trust from billions of daily legitimate emails. Corporate mail servers whitelist these pools by default. For more on how IP model affects deliverability, see our shared vs dedicated IP comparison.
100 inboxes per Outlook tenant. Each MailDeck Outlook tenant includes 100 inboxes on a single domain. At 1,000 inboxes, MailDeck needs 10 tenants. Fewer domains means less DNS management overhead and fewer domains to monitor for burn signals.
Lower entry point. MailDeck starts at $39/month for 10 Google Workspace inboxes. Mailin's minimum is $299/month for 200 accounts. Teams testing cold email or running smaller campaigns can start on MailDeck at a fraction of the cost.
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). To calculate how many inboxes you need, use our inbox calculator.
FAQ
How much does Mailin cost?
Mailin charges $299/month for 200 accounts (Solopreneur), $749/month for 500 accounts (Business), and $1,499/month for 1,000 accounts (Enterprise). The Enterprise tier allows unlimited additional accounts at $1 each. Their website advertises $1.20 per mailbox. Pricing verified on mailin.ai as of May 2026.
How does MailDeck compare to Mailin on price?
MailDeck Outlook Normal costs $0.30/inbox ($30/tenant, 100 inboxes per tenant). At 500 inboxes, MailDeck costs $150/month versus Mailin's $749/month. At 1,000 inboxes, MailDeck costs $300/month versus $1,499/month. Annual savings at 1,000 inboxes: $14,388. MailDeck also offers Google Workspace from $2.99/inbox and Private SMTP from $0.40/inbox.
What infrastructure does Mailin use?
Mailin runs private dedicated servers with dedicated IPs, supporting SMTP, Google, and Microsoft infrastructure. MailDeck takes a different approach: Outlook inboxes route through official Microsoft IP pools, Google Workspace uses official Google pools, and Private SMTP uses dedicated IPs per client. Official provider IPs carry built-in trust from billions of daily legitimate emails.
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.
Which has better deliverability for enterprise recipients?
For enterprise recipients on Microsoft Exchange or Google Workspace, MailDeck's official provider IPs deliver higher trust from corporate spam filters. Emails route through the same Microsoft and Google IP pools used by Fortune 500 companies. MailDeck maintains 98% inbox placement across 833K+ managed inboxes. Mailin's private servers build their own IP reputation, which works well for general outreach but lacks native provider trust signals.
How long does MailDeck setup take?
MailDeck Google Workspace provisions instantly. Private SMTP is ready in 24 hours. Outlook tenants take 2-3 days with full DNS verification. Mailin advertises 10-minute onboarding with 1-day delivery. MailDeck's Outlook setup is slower, but Google and SMTP are comparable or faster.
Methodology
Mailin pricing verified on mailin.ai 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. Check mailin.ai for current Mailin rates.
Last updated: May 2026
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