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Cold Email Infrastructure That Lands in the Primary Inbox — Delivered in Minutes
InboxKit is a cold email infrastructure platform for sales teams and agencies that provisions Google Workspace Microsoft 365 and Azure mailboxes with automated DNS setup, warmup, monitoring, and API integrations for scalable B2B outreach and deliverability management workflows reliable centralized pipeline campaigns
InboxKit is a cold email infrastructure platform for outbound sales teams, agencies, founders, and RevOps operators that need managed mailbox operations at scale. InboxKit provides Google Workspace, Microsoft 365, and Azure mailboxes with centralized administration, domain controls, and sending infrastructure built for B2B outreach programs. InboxKit includes automated DNS configuration for SPF, DKIM, and DMARC, one-click domain connection, isolated admin panels per domain, bulk mailbox provisioning, built-in warmup, deliverability analytics, bounce and reply tracking, inbox placement testing, blacklist monitoring, and API access with webhooks. InboxKit also supports integrations with sequencing and email automation tools, helping teams connect sending accounts into existing GTM workflows.
Teams use InboxKit to launch outbound prospecting faster, expand sending capacity across multiple domains, monitor mailbox health before campaigns decline, and maintain cleaner pipeline generation through stronger inbox placement. Agencies can manage many client domains from one workspace, while internal sales teams can standardize mailbox operations across reps and markets. InboxKit sits in the outbound GTM stack as the email infrastructure and deliverability layer that complements sequencers, CRM systems, lead generation tools, and sales engagement workflows.
InboxKit fits outbound sales teams, agencies, founders, and RevOps operators at B2B SaaS startups, scale-ups, and service firms. It serves teams scaling cold email pipeline generation with many mailboxes, domain workflows, and deliverability monitoring across automation-heavy, high-volume outbound programs.
What's included
What's included
What's included

AI-native Outbound OS for Sales Teams and GTM Engineers

Instantly connects you to 450M+ leads and automates outreach for 700K+ businesses worldwide.

All you need to cold email in one place: domains and emails, warm-up, free verification, lead finder and email sequencer

Verify all your emails, even Catch-alls. Get 50%+ more valid emails out of your lead lists

Enrich Salesforce from anywhere you work.

The prospecting tool to automate multichannel outreach & actually get replies

Smarter actions more pipeline

Find and engage your best leads, on auto-pilot

Generate 1000s of Personalised Emails that get you 8x more replies within minutes using AI

Automated Cold Email Infrastructure Across Google, Microsoft, and Entra
InboxKit is a cold email infrastructure platform that supplies and manages Google Workspace, Microsoft 365, and Azure mailboxes for outbound teams. InboxKit centralizes mailbox operations, deliverability controls, and outreach readiness for B2B pipeline generation.
InboxKit is built for sales teams, agencies, founders, and RevOps operators running outbound prospecting programs. InboxKit fits teams that need multiple sending accounts, domain management, and shared workflows across users or clients.
InboxKit automates domain connection and configures SPF, DKIM, and DMARC records during setup. InboxKit also runs health checks so teams can verify sending infrastructure before launching outreach campaigns.
InboxKit states teams can get started in minutes, with mailbox setup promoted as under one minute in newer updates. InboxKit focuses onboarding around quick domain connection and ready-to-send mailbox provisioning.
InboxKit includes built-in warmup for Google, Microsoft, and Azure mailboxes. InboxKit uses gradual volume ramping with inbox and spam rate tracking to build sender reputation before higher-volume outreach.
InboxKit provides mailbox analytics dashboards with reply rates, bounce rates, soft versus hard bounce data, and email-level insights. InboxKit helps teams monitor deliverability trends and adjust workflows using current performance data.
InboxKit states it supports 24+ integrations and works with email sequencing platforms. InboxKit also offers API access with webhooks, allowing teams to connect mailbox provisioning and monitoring into broader GTM automation workflows.
InboxKit supports agencies with bulk mailbox setup, shared workspaces, and unlimited team members on listed plans. InboxKit also provides separate admin panels per domain, which helps isolate client infrastructure and workflows.
InboxKit includes InfraGuard monitoring for blacklist status, DNS records, bounce rates, and inbox placement tests. InboxKit surfaces alerts so teams can address reputation issues before outreach performance declines.
InboxKit combines mailbox provisioning, DNS automation, warmup, monitoring, analytics, and API workflows in one operational layer. InboxKit also highlights official Google Cloud partnership status and support for Azure mailbox infrastructure.
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