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VerifiedChecked 2026-09-12

Warmup Inbox

Part of CyberPanda s. r. o.

Email warm-up and deliverability platform with inbox warming, sender-reputation monitoring, blacklist checks, and cold-email sequences.

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Revenue footprint

Where Warmup Inbox fits

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Revenue areas

Primary and supporting use cases
Coverage

Documented jobs

5 distinct jobs across 3 revenue areas

StrongManage sender reputation ↗

Builds and monitors sender reputation through automated engagement, reputation checks, and blacklist monitoring.

Condition: Specific monitoring depth and blacklist coverage vary by product configuration; plan differentiation is not fully stated.Warmup Inbox documentation ↗
StrongMonitor email deliverability ↗

Monitors spam placement, inbox health, DNS authentication signals, and blacklist status.

Condition: The pricing page lists spam/category monitoring and reputation checks in Basic; detailed entitlement boundaries are not fully specified.Warmup Inbox documentation ↗
StrongOrchestrate outreach sequences ↗

Provides multi-step cold-email sequences with follow-ups and outreach workflow controls.

Condition: Outreach sequences are listed in Basic; detailed sequence limits are not stated.Warmup Inbox documentation ↗
StrongSend prospecting email ↗

Runs outbound prospecting email sequences directly from Warmup Inbox.

Condition: The official product update documents cold-email sequences; current plan-specific sending limits are not fully specified beyond pricing-page warm-up limits.Warmup Inbox documentation ↗
StrongValidate contact details ↗

Verifies uploaded email addresses to filter invalid addresses and reduce hard bounces.

Condition: Verification is documented as included at no additional cost; detailed accuracy and coverage are unknown.Warmup Inbox documentation ↗

Overview

What Warmup Inbox does

Warmup Inbox connects sending mailboxes to a network of real inboxes that exchange messages, open and reply to them, and monitor spam placement, DNS configuration, and blacklist status. It also offers cold-email sequences and lead-list verification.

Automated inbox warm-up through a network of 30,000+ real inboxesConfigurable warm-up sending volume and reply-rate settingsSpam and category monitoringEmail reputation checksSPF, DKIM, DMARC, DNS, and blacklist monitoringCold-email sequences with follow-ups and personalization variablesLead-list upload and email-address verificationMultiple mailbox and SMTP-provider connectionsDeveloper API accessDashboards and deliverability reporting

Buying context

Fit and constraints

Best for
Outbound teams, marketers, recruiters, and agencies warming email inboxes and running deliverability-conscious outreach.
Relevant constraints
  • Warm-up does not guarantee inbox placement or campaign performance.
  • The product requires connecting an existing mailbox or SMTP-capable provider; mailbox or domain provisioning is not established.
  • Provider support and warm-up limits vary by plan.
  • Annual prices are billed as one 12-month payment.
  • Agency plans, volume discounts, multi-client workspaces, white-label reports, and consolidated billing require a quote.
  • Taxes are not stated on the reviewed official pricing page.
  • The official FAQ contains an older starting-price statement of $19 per inbox per month, while the current pricing page lists Basic at $15 per inbox per month monthly; this is an unresolved official-source conflict.
Evidence status
Vendor documented · checked 2026-09-12

Pricing

Plans and billing

Public USD pricing is listed per inbox per month, with monthly and annual billing. Annual plans are billed upfront for 12 months and advertised as 20% savings. Custom agency pricing is quote-based from 15 inboxes.

Pricing model
Usage-based
Minimums
15-user minimum · Annual commitment
Free access
7-day trial
Last checked
2026-09-12

Basic

$180/yrNot stated · 12-month commitment · Self-serve

$180 billed yearly per inbox; official page states annual billing saves 20% versus monthly.

Check current price ↗
$15/moNot stated · Self-serve

Charged per inbox. Cancel anytime.

Check current price ↗

Pro

$588/yrNot stated · 12-month commitment · Self-serve

$588 billed yearly per inbox; official page states annual billing saves 20% versus monthly.

Check current price ↗
$49/moNot stated · Self-serve

Charged per inbox. Cancel anytime.

Check current price ↗

Max

$948/yrNot stated · 12-month commitment · Self-serve

$948 billed yearly per inbox; official page states annual billing saves 20% versus monthly.

Check current price ↗
$79/moNot stated · Self-serve

Charged per inbox. Cancel anytime.

Check current price ↗

Agency / custom

Custom pricingNot stated · 15-user minimum · Contact sales

Custom plans start at 15 inboxes; larger volume discounts past 50. Multi-client workspaces, white-label reports, and consolidated billing are stated as available.

Check current price ↗

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

RevManic has not ingested a verified review source for this product yet. We do not convert vendor testimonials into star ratings.

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Product references

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

  1. Feature releases ↗warmupinbox.com/blog/product-updates/feature-releases/Vendor documentation
  2. Pricing ↗warmupinbox.com/pricing/Vendor documentation
  3. How it works ↗warmupinbox.com/how-it-works/Vendor documentation

Alternatives

Peers in this market

40
lemlistFounders, SDR/BDR teams, sales teams, agencies, and growth teams running outbound prospecting across multiple channels.InstantlyOutbound teams running multi-inbox cold-email campaigns and needing integrated warmup and deliverability tooling.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.FolderlyOutbound teams needing mailbox/domain preparation, sender-reputation management, deliverability diagnostics, and email verification.MailshakeOutbound sales teams, SDRs/BDRs, founders, and agencies running email-led prospecting programs.SmartleadOutbound teams, agencies, and high-volume prospecting operations that need scalable cold-email execution and sender infrastructure.WoodpeckerSmall outbound sales teams, lead-generation agencies, recruiters, and business owners running personalized prospecting campaigns.AmplemarketOutbound B2B sales teams seeking prospecting, signal-led prioritization, and multichannel engagement in one platform.QuickMailOutbound teams, growth teams, lead-generation agencies, and operators running cold-email or LinkedIn campaigns.AiSDRFounders and revenue teams that need automated, signal-based outbound prospecting and follow-up without adding SDR headcount.DripifyOutbound sales teams and professionals running LinkedIn-led prospecting with optional email steps.EasyDMARCOrganizations and MSPs that need centralized email-authentication compliance, domain protection, sender-reputation monitoring, and deliverability operations.HunterSmall and mid-sized outbound teams that need public-web contact discovery, email verification, lead enrichment, and prospecting-email sequences in one platform.InboxAllyTeams, agencies, and high-volume senders that need to monitor, warm up, or repair email sender reputation and inbox placement across mailbox providers.LushaSales, marketing and revenue-operations teams that want self-service prospecting and credit-based enrichment with optional signals, API access, outreach and conversation intelligence in the same platform.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.WaalaxyFounders, SDRs/BDRs, and small outbound teams running LinkedIn-led prospecting; Business is positioned for LinkedIn-plus-email outreach.ZeroBounceTeams that need to validate or enrich email lists and monitor email deliverability before and during outbound or marketing campaigns.BouncerTeams that need to validate prospect or marketing email lists, automate CRM email hygiene, protect signup forms, or monitor email deliverability.DubbSalespeople, small outbound teams, agencies, consultants, real-estate professionals, recruiters, coaches, and other teams using personalized video to initiate or advance sales conversations.11xTeams evaluating autonomous or AI-assisted outbound prospecting and sales-development workflows.Agent FrankB2B teams targeting startups, SMBs, or mid-market companies that want to automate outbound prospecting and meeting generation at scale.Apollo.ioOutbound sales teams seeking prospect data and outreach execution in one platform.ArtisanSales teams scaling outbound prospecting and pipeline generation across cold outbound, signal-triggered, CRM reactivation, and expansion campaigns.AttioSmall to growing revenue teams that want a flexible CRM and relationship-focused system of record with configurable workflows and automation.ClaySmall and growing GTM teams building data-driven prospecting, enrichment, signal-monitoring, and outbound workflows.Common RoomSignal-based selling, product-led sales, account-based prospecting, buyer-intent prioritization, and GTM teams that need unified person/account intelligence and workflow activation.DialpadTeams wanting unified business communications and AI-assisted sales or customer-support conversations.dmarcian DMARC Management PlatformOrganizations, IT teams, email administrators, and managed service providers responsible for email-domain authentication, DMARC deployment, monitoring, and enforcement.ExpandiSales teams, founders, recruiters, and lead-generation agencies running LinkedIn-led outbound campaigns.FreshsalesSmall and mid-sized sales teams seeking a general-purpose CRM with built-in engagement and automation.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.HeyReachOutbound sales teams and agencies scaling LinkedIn outreach across multiple LinkedIn sender accounts.KoalaOutbound sales and GTM teams prioritizing high-intent accounts and automating signal-triggered prospecting.La Growth MachineSales teams, founders and lead-generation agencies running LinkedIn-first, multichannel outbound campaigns.MaildosoOutbound sales teams and agencies that need scalable cold-email mailbox and domain infrastructure.MailReachB2B outbound teams, agencies, and marketers that need to warm and monitor multiple sending mailboxes.