--- title: "Infraforge Alternatives: MailDeck vs Infraforge, 4x Lower SMTP Cost" description: "Infraforge alternatives compared: Infraforge charges $4.00/inbox for private SMTP. MailDeck SMTP starts at $0.95/inbox, about 4x cheaper on the same infrastructure type, plus Outlook from $0.30/inbox. Winnr, Primeforge, Maildoso, Mailforge and Mailscale side by side." canonical: "https://maildeck.co/alternative/infraforge" last-updated: "2026-10-11" --- > Infraforge alternatives compared: Infraforge charges $4.00/inbox for private SMTP. MailDeck SMTP starts at $0.95/inbox, about 4x cheaper on the same infrastructure type, plus Outlook from $0.30/inbox. Winnr, Primeforge, Maildoso, Mailforge and Mailscale side by side. Guide # Infraforge Alternatives: MailDeck vs Infraforge, 4x Lower SMTP Cost Mar 18, 2026 11 min read Contents Infraforge Alternatives ComparedWhich Infraforge Alternative Fits Your TeamThe 8x Cost Difference: SMTP vs SMTPBeyond SMTP: MailDeck's Additional Infrastructure TypesDiversified Stack PricingQuick ComparisonInfrastructure Deep DiveWhere MailDeck Falls ShortWhere MailDeck WinsMethodology Both Infraforge and MailDeck sell private SMTP inboxes with dedicated IPs for cold email. The difference is price. Infraforge charges approximately $4.00/inbox. MailDeck charges $0.95/inbox for the same infrastructure type. That is roughly a 4x cost difference on a direct, like-for-like comparison. MailDeck also provides two additional infrastructure types that Infraforge does not offer: Microsoft 365 Outlook (from $0.30/inbox) and Google Workspace (from $2.50/inbox). Teams can run all three under a single provider and diversify sending risk across official Microsoft IPs, official Google IPs, and dedicated SMTP IPs simultaneously. MailDeck platform data from Q2 2026: 4.35M+ managed inboxes, 1,631+ clients, 65M+ emails/day, 270M+ lifetime, 1,200+ domains, 98% inbox placement rate. This article compares SMTP pricing at multiple volume tiers, explains the infrastructure differences between each provider type, and identifies where each provider fits best. Infraforge pricing referenced from [infraforge.ai/pricing](https://www.infraforge.ai/pricing) as of May 2026. Short answer: the main Infraforge alternatives are MailDeck, Winnr, Primeforge, Maildoso, Mailforge and Mailscale. If you want the same private SMTP model with dedicated IPs for less, MailDeck Private SMTP costs $0.95/inbox against Infraforge's ~$4.00/inbox. If you want to stop relying on SMTP alone, MailDeck also sells Microsoft 365 Outlook inboxes from $0.30/inbox and Google Workspace from $2.50/inbox under the same account. Infraforge sells private SMTP only. ## Infraforge Alternatives Compared Every provider below sells inboxes for cold email, not a sequencer. They differ on three things that matter more than the headline price: which infrastructure the inboxes send from, whether the IPs are shared or yours, and the smallest order you can place. Prices are each provider's lowest published per-inbox rate as referenced on our comparison pages (May 2026). | Provider | Infrastructure | IP model | Lowest cost per inbox | Minimum order | Setup time | |---|---|---|---|---|---| | MailDeck | Microsoft 365 Outlook + Google Workspace + Private SMTP | Official Microsoft and Google pools, dedicated SMTP IPs | $0.30 (Outlook), $0.95 (SMTP), $2.50 (Google) | $28/month (10 Google inboxes) | Instant (Google), 24h (SMTP), 2-3 days (Outlook) | | Infraforge | Private SMTP only | Dedicated SMTP IPs ($99/month per IP) | ~$4.00 (~$2.50 at volume) | 10 mailbox slots (~$40/month) | ~5 minutes | | [Winnr](https://maildeck.co/alternative/winnr) | Proprietary SMTP only | Shared pools (dedicated $20/month, Enterprise only) | $0.95 (Enterprise plan) | $69/month (50 mailboxes) | Under 10 minutes | | [Primeforge](https://maildeck.co/alternative/primeforge) | Google Workspace + Microsoft 365 | US IP addresses | $4.50/slot | 10 mailbox slots | Varies | | [Maildoso](https://maildeck.co/alternative/maildoso) | Google Workspace + shared SMTP | Shared pools with rotation (dedicated $99/month) | ~$1.90-2.25 | ~$50/month | Minutes | | [Mailforge](https://maildeck.co/alternative/mailforge) | SMTP only | Shared IP pool | $3.00 (annual billing) | 10 mailbox slots ($30/month) | 5 minutes | | [Mailscale](https://maildeck.co/alternative/mailscale) | Self-hosted SMTP only | Self-hosted IP pools | $1.25 (Enterprise, 200 inboxes) | $79/month (15 inboxes) | Under 60 seconds | Two patterns stand out. First, most Infraforge alternatives are also SMTP-only, so switching between them changes the price but not the risk of having every inbox on one infrastructure type. Second, the cheaper SMTP providers (Winnr, Maildoso, Mailforge) get there with shared IP pools, where another sender's complaints can hit your reputation. Infraforge's selling point is dedicated IPs; MailDeck Private SMTP keeps dedicated IPs per client at $0.95/inbox. ## Which Infraforge Alternative Fits Your Team - You like Infraforge's dedicated-IP SMTP but not the price: MailDeck Private SMTP, same model, $0.95/inbox at any volume. The catch: a 100-inbox minimum and 24-hour setup. - You want Outlook or Google inboxes instead of SMTP: MailDeck (Outlook from $0.30/inbox, Google from $2.50/inbox) or Primeforge ($4.50/slot for Google Workspace and Microsoft 365). - You want all three infrastructure types under one bill: MailDeck is the only provider in this table covering Microsoft 365, Google Workspace and SMTP. The Growth Diversified Stack is $399/month for 1,000 Outlook + 100 SMTP + 30 Google inboxes. - You need fewer than 100 SMTP inboxes live in minutes: Infraforge, Mailforge and Mailscale all provision in minutes with 10-15 inbox minimums. MailDeck does not beat them on this. - You want the lowest SMTP-only sticker price and accept shared IPs: Winnr ($0.95 on Enterprise) or Mailscale ($1.25 on Enterprise), level with or above MailDeck's dedicated-IP SMTP at $0.95. ## The 8x Cost Difference: SMTP vs SMTP The headline claim requires a like-for-like comparison. Both Infraforge and MailDeck offer private SMTP infrastructure with dedicated IPs. Here is the direct comparison across volume tiers. ### SMTP Pricing at 100 Inboxes | Provider | Product | Monthly Cost | Cost Per Inbox | |---|---|---|---| | MailDeck | Private SMTP | $95 | $0.95 | | Infraforge | Private SMTP | ~$400 | ~$4.00 | At 100 SMTP inboxes, MailDeck costs $50/month. Infraforge costs approximately $400/month. That is a $350/month difference, or $4,200/year in savings on identical infrastructure. ### SMTP Pricing at 500 Inboxes | Provider | Product | Monthly Cost | Cost Per Inbox | |---|---|---|---| | MailDeck | Private SMTP | $475 | $0.95 | | Infraforge | Private SMTP | ~$1,500 | ~$3.00 | At 500 SMTP inboxes, MailDeck runs $250/month. Infraforge runs approximately $1,500/month at its estimated volume-discounted rate. Annual difference: $12,300. ### SMTP Pricing at 1,000 Inboxes | Provider | Product | Monthly Cost | Cost Per Inbox | |---|---|---|---| | MailDeck | Private SMTP | $950 | $0.95 | | Infraforge | Private SMTP | ~$2,500 | ~$2.50 | At 1,000 SMTP inboxes, MailDeck stays at $0.95/inbox ($950/month). Even at Infraforge's deepest estimated volume discount of $2.50/inbox, Infraforge still runs $2,500/month. Annual difference: $18,600. At 5,000+ SMTP inboxes, MailDeck drops further to $0.40/inbox ($2,000/month). The savings grow larger at every volume tier. For a full breakdown of cold email infrastructure costs across providers, see [Cold Email Infrastructure Cost 2026](https://maildeck.co/blog/cold-email-infrastructure-cost-2026). ## Beyond SMTP: MailDeck's Additional Infrastructure Types The SMTP comparison above covers where Infraforge and MailDeck compete directly. But MailDeck also provides two additional infrastructure types that Infraforge does not offer at all. ### Microsoft 365 Outlook MailDeck provisions Outlook inboxes on official Microsoft Azure IP pools. These IPs are whitelisted by default across virtually every receiving server because billions of legitimate emails flow through them daily. - Outlook Normal: $30/tenant (100 inboxes) = $0.30/inbox - Outlook Mixed: $35/tenant (100 inboxes) = $0.35/inbox - Outlook Premium: $40/tenant (100 inboxes) = $0.40/inbox - Pre-Warmed: $30/tenant (100 inboxes) = $0.30/inbox, ready to send immediately Clients send 4-5 cold emails per inbox per day on Outlook Normal, or 8-10 per day on Outlook Premium, across domains with a minimum interval of 61 minutes between sends. Based on Q2 2026 MailDeck platform data. ### Google Workspace MailDeck provisions Google Workspace inboxes on official Google IP pools, which carry the highest trust score of any email infrastructure globally. - Starter: $28/month (10 inboxes) = $2.80/inbox - Growth: $84/month (30 inboxes) = $2.80/inbox - Enterprise: $280/month (100 inboxes) = $2.80/inbox ### Why Multiple Infrastructure Types Matter Running 100% of cold email volume through a single infrastructure type concentrates risk. If that provider's IP pool gets flagged or the platform changes policies, every inbox goes down at once. Spreading volume across Outlook, SMTP, and Google isolates each layer from the others. For more on why diversification matters at scale, see [Cold Email Infrastructure Diversification](https://maildeck.co/blog/cold-email-infrastructure-diversification). ## Diversified Stack Pricing MailDeck offers bundled Diversified Stack plans that combine all three infrastructure types under a single subscription: | Plan | Composition | Monthly Price | Cold Sends/Month | |---|---|---|---| | Starter | 200 Outlook + 10 SMTP + 5 Google | $99 | 40,000 | | Growth | 1,000 Outlook + 100 SMTP + 30 Google | $399 | 215,000 | | Enterprise | 10,000 Outlook + 1,000 SMTP + 300 Google | $3,499 | 2,150,000 | Infraforge does not offer a comparable multi-infrastructure bundle. Teams that want to diversify across Microsoft, Google, and SMTP would need to purchase Infraforge for SMTP and source Microsoft 365 and Google Workspace inboxes from separate providers, adding complexity and multiple vendor relationships. ## Quick Comparison | Feature | MailDeck | Infraforge | |---|---|---| | Infrastructure types | Microsoft 365, Google Workspace, SMTP | Private SMTP only | | SMTP cost per inbox | $0.95 at any volume | ~$4.00 (standard rate) | | Lowest cost per inbox (any type) | $0.30 (Outlook Normal) | ~$4.00 (SMTP) | | IP model | Official Microsoft IPs, Official Google IPs, Dedicated SMTP IPs | Dedicated SMTP IPs | | Inboxes per domain | 100 (Outlook), 5 (Google/SMTP) | 1-3 per domain | | DNS setup | Automated SPF, DKIM, DMARC | Automated SPF, DKIM, DMARC | | Sequencer included | No (works with any SMTP sequencer) | No (integrated with Salesforge) | | Setup time | Instant to 3 days (varies by product) | ~5 minutes | | Minimum order | $28/month (10 Google inboxes) | 10 mailbox slots (~$40/month) | | Managed inboxes | 4.35M+ | Not published | | Pre-warmed option | Yes ($0.30/inbox, ready immediately) | Pre-warmed domains available | ## Infrastructure Deep Dive ### Infraforge: Private SMTP with Dedicated IPs Infraforge builds custom SMTP servers and assigns dedicated IPs to each client. Your IP score depends entirely on your own sending behavior, and no other sender can affect it. The tradeoff is that private SMTP starts with zero IP reputation. Every new IP must be warmed from scratch, which takes 3-4 weeks minimum. Enterprise mail servers that whitelist Microsoft and Google IPs by default will apply higher scrutiny to unknown SMTP IPs. Infraforge operates exclusively on this single infrastructure type. Teams that need Microsoft 365 or Google Workspace inboxes would need to source those from a separate provider. ### MailDeck: Three Equal Infrastructure Types MailDeck provides inboxes across Microsoft 365 Outlook, Google Workspace, and Private SMTP. Each type runs on different infrastructure with different IP trust levels. Microsoft 365 Outlook inboxes send through official Microsoft Azure IP pools. These IPs are whitelisted by default across virtually every receiving server. Google Workspace inboxes send through official Google IP pools, which carry the highest trust score of any email provider globally. MailDeck Private SMTP uses dedicated IPs per client, identical in model to what Infraforge provides. The core difference: MailDeck gives teams the ability to distribute volume across all three infrastructure types under a single provider. A team running 1,000 inboxes can split 50% across Outlook, 30% across SMTP, and 20% across Google, isolating each channel from disruptions affecting the others. To understand how shared vs. dedicated IP models affect deliverability in practice, see [Shared IP vs Dedicated IP for Cold Email](https://maildeck.co/blog/shared-ip-vs-dedicated-ip-cold-email). ## Where MailDeck Falls Short Infraforge has genuine advantages in two areas within the inbox provider category. Lower SMTP minimum purchase. Infraforge allows purchasing as few as 10 mailbox slots at approximately $40/month. MailDeck's SMTP minimum is 100 inboxes ($95/month). For teams that need fewer than 100 SMTP inboxes, Infraforge provides a more granular entry point. (MailDeck's lowest minimum across all products is 10 Google Workspace inboxes at $28/month.) Faster SMTP setup. Infraforge advertises approximately 5-minute automated provisioning for SMTP mailboxes. MailDeck SMTP setup takes 24 hours. For teams that need SMTP infrastructure operational within minutes, Infraforge's speed is a real advantage. (MailDeck Google Workspace is instant, and Outlook tenants take 2-3 business days.) ## Where MailDeck Wins About 4x lower SMTP pricing. On a direct, like-for-like comparison of private SMTP infrastructure, MailDeck charges $0.95/inbox vs. Infraforge's $4.00/inbox. At 500 inboxes, the annual savings exceed $15,000. At 1,000 inboxes, annual savings reach $24,600 or more depending on Infraforge's volume tier. Three infrastructure types instead of one. Infraforge provides private SMTP exclusively. MailDeck covers Microsoft 365 Outlook, Google Workspace, and Private SMTP equally. Teams can match infrastructure to their target audience and diversify sending risk across providers. A 1,000-inbox Diversified Stack (Outlook + SMTP + Google) costs $399/month on the Growth plan, which includes 215,000 cold sends per month. Official Microsoft and Google IP pools. Infraforge sends through private SMTP servers where IP reputation is built from scratch. MailDeck Outlook inboxes send through Microsoft Azure IP pools, whitelisted by default. MailDeck Google Workspace inboxes send through Google IP pools, the highest-trust sending infrastructure globally. Enterprise recipients using Microsoft Exchange or Google Workspace give priority to emails from matching official IPs. 100 inboxes per domain on Outlook. Each MailDeck Outlook tenant includes 100 inboxes on a single domain. Infraforge provisions 1-3 mailboxes per domain. To run 1,000 inboxes, Infraforge requires 333-1,000 domains. MailDeck Outlook requires 10 domains. Fewer domains means simpler DNS management and lower domain acquisition costs. Pre-warmed inboxes with zero warmup time. MailDeck offers Pre-Warmed Outlook tenants at $0.30/inbox that are ready to send cold email immediately. This eliminates the 3-4 week IP warmup period that private SMTP infrastructure requires. Scale with managed infrastructure. MailDeck manages 4.35M+ inboxes across 1,631+ clients with automated SPF, DKIM, and DMARC configuration on all 1,200+ domains. Adding capacity means ordering additional tenants or inboxes. Infrastructure, DNS, and authentication are handled on the provider side. Transparent published pricing. Every MailDeck product has fixed, published pricing. Outlook Normal: $30/tenant ($0.30/inbox). Outlook Premium: $40/tenant ($0.40/inbox). SMTP: $0.95/inbox at any volume. Google Workspace: $28/month (10 inboxes), $84/month (30), $280/month (100). Infraforge's pricing page shows $4/mailbox at base rate, with volume discounts requiring direct inquiry. ## FAQ ### What are the best Infraforge alternatives? The main Infraforge alternatives are MailDeck, Winnr, Primeforge, Maildoso, Mailforge and Mailscale. MailDeck is the closest like-for-like replacement: private SMTP with dedicated IPs at $0.95/inbox versus Infraforge's ~$4.00, plus Microsoft 365 Outlook from $0.30/inbox and Google Workspace from $2.50/inbox. Winnr, Mailforge and Mailscale are SMTP-only; Winnr and Mailforge use shared IP pools. Primeforge sells Google Workspace and Microsoft 365 at $4.50/slot. ### What is the cheapest Infraforge alternative? Of the providers compared here, MailDeck has the lowest published per-inbox price: $0.30/inbox on Outlook Normal and $0.95/inbox on Private SMTP with dedicated IPs. The cheapest SMTP-only alternatives are Winnr at $0.95/mailbox (Enterprise plan) and Mailscale at $1.25/inbox (Enterprise, 200 inboxes). ### Which Infraforge alternatives keep dedicated IPs? MailDeck Private SMTP includes dedicated IPs per client at $0.95/inbox. Winnr offers dedicated IPs only on its Enterprise plan at $20/month, and Maildoso charges $99/month per dedicated IP. Mailforge runs on a shared IP pool. MailDeck Outlook and Google inboxes send from official Microsoft and Google IP pools instead. ### How much does Infraforge cost per inbox? Infraforge charges approximately $4.00/inbox at standard volume for private SMTP. Dedicated IPs cost an additional $99/month each. Domains cost $14/year. At 100 mailboxes before IP costs, Infraforge runs approximately $400/month. Pricing referenced from [infraforge.ai/pricing](https://www.infraforge.ai/pricing) as of May 2026. ### How does MailDeck SMTP compare to Infraforge SMTP on price? On a like-for-like SMTP comparison, MailDeck charges $0.95/inbox (1-1K inboxes) while Infraforge charges approximately $4.00/inbox. That makes MailDeck about 4x cheaper for the same infrastructure type. At 1,000 SMTP inboxes, MailDeck costs $450/month vs. Infraforge's estimated $2,500-$4,000/month. Annual savings range from $24,600 to $42,600. ### Does Infraforge use Microsoft 365 or Google Workspace infrastructure? Infraforge uses proprietary private SMTP servers with dedicated IPs. It does not send through official Microsoft or Google infrastructure. MailDeck provides all three: Microsoft 365 Outlook on official Microsoft Azure IPs, Google Workspace on official Google IPs, and Private SMTP on dedicated IPs. ### What is the best infrastructure split for cold email at scale? A recommended diversification ratio is 50/30/20: 50% Outlook Premium (bulk workhorse, official Microsoft IPs), 30% Private SMTP (volume buffer, replaceable if flagged), and 20% Google Workspace (premium layer, highest deliverability). The Growth Diversified Stack at $399/month delivers 215,000 cold sends per month across all three types. ### Can I use MailDeck with my existing sequencer? Yes. All MailDeck inboxes connect via SMTP to any sequencer: Instantly, Smartlead, Saleshandy, Apollo, Lemlist, Woodpecker, Reply.io, Snov.io, QuickMail, and any SMTP-compatible platform. MailDeck provides inboxes and infrastructure. Your sequencer handles scheduling and sequences. ### What is MailDeck's minimum purchase? Minimums vary by product: 2 Outlook tenants (200 inboxes, $60/month), 100 SMTP inboxes ($95/month), or 10 Google Workspace inboxes ($28/month). Infraforge requires a minimum of 10 mailbox slots at approximately $40/month. Both providers offer entry points under $60/month. ### How long does MailDeck setup take compared to Infraforge? Infraforge provisions mailboxes in approximately 5 minutes with automated DNS. MailDeck setup depends on the product: Google Workspace is instant, Private SMTP takes 24 hours, and Outlook tenants take 2-3 business days. All MailDeck products include automated SPF, DKIM, and DMARC configuration across 1,200+ managed domains. ## Methodology Infraforge pricing referenced from [infraforge.ai/pricing](https://www.infraforge.ai/pricing) as of May 2026. Volume discount estimates sourced from [emailwarmup.com Infraforge review](https://emailwarmup.com/blog/email-deliverability-tools/infraforge-review/). MailDeck pricing sourced from published rates at [maildeck.co](https://maildeck.co) as of Q2 2026. Deliverability context based on MailDeck platform data across 4.35M+ managed inboxes, 1,200+ domains, and 1,631+ clients. 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