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VerifiedChecked 2026-09-12

Maildoso

Outbound email infrastructure providing SMTP and Google Workspace mailboxes, domains, authentication setup, warm-up, deliverability monitoring, and sequencer connectivity.

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Revenue footprint

Where Maildoso fits

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Revenue areas

Primary and supporting use cases
Coverage

Documented jobs

3 distinct jobs across 1 revenue area

StrongManage sender reputation ↗

Provides operational controls and signals relevant to sender reputation, including IP rotation, mailbox recovery, domain status, and mailbox health scores.

Maildoso documentation ↗
StrongMonitor email deliverability ↗

Runs inbox-placement tests every three days and displays current health scores for each mailbox.

Maildoso documentation ↗
StrongProvision mailboxes and domains ↗

Provides domains and mailboxes for outbound communication and automatically configures SPF, DKIM, and DMARC.

Condition: SMTP plans; monthly plans require separately purchased or customer-owned domains.Maildoso documentation ↗

Overview

What Maildoso does

Maildoso provisions outbound mailboxes and sending domains, automatically configures SPF/DKIM/DMARC, supports IP rotation and mailbox recovery, monitors inbox placement, and exports or connects mailboxes to outreach sequencers.

Provision SMTP mailboxes for outbound campaignsProvision and manage sending domainsAutomatic SPF, DKIM, and DMARC configurationIP rotationSelf-healing mailboxes with 14-day recovery pausesInbox-placement tests every three days and mailbox health scoresGlobal Custom Domain Tracking for links and imagesWarm-up servicesMailbox export or direct connection to major sequencersREST API and MCP server for domains, mailboxes, forwarding, warm-up, exports, and statisticsUnified reply forwarding to a master inbox

Buying context

Fit and constraints

Best for
Outbound sales teams and agencies that need scalable cold-email mailbox and domain infrastructure.
Relevant constraints
  • SMTP mailboxes are optimized for B2B outreach; personal-provider recipients may have reduced inbox placement.
  • SMTP limit is stated as 15 cold emails and 80 warm-up emails per mailbox per day.
  • Google Workspace mailboxes are currently unavailable for new purchases.
  • SMTP supports up to 99 mailboxes per domain, with no more than 8 recommended; Google Workspace supports up to 5 per domain.
  • Monthly SMTP plans require separately purchased domains or customer-owned domains.
  • New mailboxes require a warm-up period.
  • Tax treatment is not stated on the reviewed pricing pages.
Evidence status
Vendor documented · checked 2026-09-12

Pricing

Plans and billing

Public USD pricing is available for SMTP mailbox packages and custom volume tiers. Domains are separately priced at $12 per domain per year for monthly/custom arrangements and included in published quarterly SMTP packages. Google Workspace new purchases are paused.

Pricing model
Tiered · Usage-based · Per organisation
Minimums
10-user minimum · 3-month commitment
Free access
30-day trial
Last checked
2026-09-12

Custom SMTP volume pricing

$2.50/mounknown · 10-user minimum · Contact sales

Minimum configuration is 10 SMTP mailboxes and 1 domain; rates apply to all mailboxes in the account based on total quantity. Domains billed separately at $12 per domain per year. Maximum is not capped.

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Monthly SMTP — 30 mailboxes

$75/mo · 30 users includedunknown · 30-user minimum · Self-serve

30-day money-back guarantee is stated for new monthly SMTP users; domains are not included.

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Combo SMTP + Google Workspace

$90/mo · 30 users includedunknown · 30-user minimum · Self-serve

Published combo packages list 15+15, 35+35, and 150+150 mailboxes; Google Workspace new purchases are currently paused.

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Monthly SMTP — 70 mailboxes

$158/mo · 70 users includedunknown · 70-user minimum · Self-serve

Domains are not included.

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Quarterly SMTP — 32 mailboxes

$299 · 32 users includedunknown · 32-user minimum · 3-month commitment · Self-serve

Includes 8 domains.

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Quarterly SMTP — 68 mailboxes

$499 · 68 users includedunknown · 68-user minimum · 3-month commitment · Self-serve

Includes 17 domains.

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Monthly SMTP — 300 mailboxes

$570/mo · 300 users includedunknown · 300-user minimum · Self-serve

A promotional 30-day trial offer is documented at this quantity; domains are not included.

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Quarterly SMTP — 400 mailboxes

$2,199 · 400 users includedunknown · 400-user minimum · 3-month commitment · Self-serve

Includes 100 domains.

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List prices can exclude tax, usage charges, onboarding, add-ons, and negotiated discounts. Check the vendor page before buying.

Reviews

Buyer reviews

☆☆☆☆☆No verified rating yet0 verified buyer reviews

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Product references

We reviewed these official vendor documents. Product claims have not yet been independently tested.

  1. Product website ↗maildoso.aiVendor documentation
  2. 16443027 how much do smtp mailboxes cost volume pricing tiers ↗intercom.help/maildoso/en/articles/16443027-how-much-do-smtp-mailboxes-cost-volume-pricing-tiersVendor documentation
  3. Pricing ↗maildoso.ai/pricingVendor documentation

Alternatives

Peers in this market

36
FolderlyOutbound teams needing mailbox/domain preparation, sender-reputation management, deliverability diagnostics, and email verification.ZapmailOutbound teams, freelancers, and agencies that need scalable cold-email domains and mailboxes with managed DNS and deliverability tooling.MailreefOutbound teams and agencies scaling cold-email infrastructure across multiple domains and mailboxes.InfraforgeOutbound teams and agencies that need dedicated, managed sending infrastructure for cold-email campaigns and want to use a separate sending application.InstantlyOutbound teams running multi-inbox cold-email campaigns and needing integrated warmup and deliverability tooling.lemlistFounders, SDR/BDR teams, sales teams, agencies, and growth teams running outbound prospecting across multiple channels.SmartleadOutbound teams, agencies, and high-volume prospecting operations that need scalable cold-email execution and sender infrastructure.dmarcian DMARC Management PlatformOrganizations, IT teams, email administrators, and managed service providers responsible for email-domain authentication, DMARC deployment, monitoring, and enforcement.EasyDMARCOrganizations and MSPs that need centralized email-authentication compliance, domain protection, sender-reputation monitoring, and deliverability operations.GlockAppsEmail marketers, outbound teams, and agencies that need inbox-placement diagnostics, sender-reputation monitoring, and email-authentication visibility.GGoogle Postmaster ToolsBulk email senders that need Gmail-specific delivery and compliance visibility.InboxAllyTeams, agencies, and high-volume senders that need to monitor, warm up, or repair email sender reputation and inbox placement across mailbox providers.MailReachB2B outbound teams, agencies, and marketers that need to warm and monitor multiple sending mailboxes.MailshakeOutbound sales teams, SDRs/BDRs, founders, and agencies running email-led prospecting programs.MailtrapDeveloper and DevOps teams testing application email, sending transactional email, and monitoring deliverability.MxToolboxEmail teams, marketers, IT professionals, and service providers that need to diagnose email-delivery problems and monitor sender reputation or authentication.ValimailOrganizations that need to discover authorized and unauthorized email senders, monitor authentication, and automate DMARC enforcement across domains.WarmforgeOutbound sales teams and agencies that need mailbox warm-up, sender-reputation monitoring, and inbox-placement visibility for cold-email infrastructure.Warmup InboxOutbound teams, marketers, recruiters, and agencies warming email inboxes and running deliverability-conscious outreach.WarmyOutbound teams and agencies that need mailbox warm-up, sender-reputation management, and email deliverability monitoring.ZeroBounceTeams that need to validate or enrich email lists and monitor email deliverability before and during outbound or marketing campaigns.AiSDRFounders and revenue teams that need automated, signal-based outbound prospecting and follow-up without adding SDR headcount.AmplemarketOutbound B2B sales teams seeking prospecting, signal-led prioritization, and multichannel engagement in one platform.BouncerTeams that need to validate prospect or marketing email lists, automate CRM email hygiene, protect signup forms, or monitor email deliverability.PrimeforgeOutbound sales teams, agencies, and AI-SDR workflows that need mailbox infrastructure for scaled cold email.QuickMailOutbound teams, growth teams, lead-generation agencies, and operators running cold-email or LinkedIn campaigns.Reply.ioOutbound sales, SDR/BDR teams, agencies, and small-to-growing teams needing coordinated email, LinkedIn, calling, SMS, and AI-assisted prospecting.SaleshandyOutbound sales teams, agencies, and founders running cold-email campaigns at increasing scale.Google WorkspaceOrganizations needing hosted business email, shared calendars, cloud file storage, real-time document collaboration, and video conferencing.MailforgeOutbound teams and agencies that need multiple sending domains and mailboxes for cold-email infrastructure.Microsoft 365Organizations needing integrated workplace productivity, hosted business email, online meetings, file collaboration, and sales-content workflows.MillionVerifierTeams that need to validate email lists and reduce invalid or risky addresses before sending.PhoneBurnerOutbound sales teams and individuals prioritizing high-volume, live phone conversations with controlled, relationship-oriented outreach.SalesforgeOutbound sales teams, agencies, and solopreneurs running email and LinkedIn prospecting campaigns.WoodpeckerSmall outbound sales teams, lead-generation agencies, recruiters, and business owners running personalized prospecting campaigns.Zoho MailSmall and mid-sized organizations needing hosted custom-domain email with administrative controls and optional Zoho Workplace collaboration tools.