Everything you need to land in primary
Email infrastructure for outreach teams: Google, Microsoft 365 & Azure mailboxes
Trusted by
Email Infrastructure That Actually Delivers
90%+ Inbox Rate
Official Google, Microsoft & Azure accounts
Full API Access
Build custom workflows with webhooks
24+ Integrations
Works with every email tool
Setup in 20 Minutes
Get started in no time
Email Insights
Track reply, bounce rate instantly
Full Admin Control
Your domain, your rules
Unlimited Team
Add as many users as you need
Built-in Warmup
Warm up every mailbox automatically
Ready in 10 Minutes
Whether you’re setting up 10 mailboxes or 1,000, getting started is quick. Connect your domain with one click and start sending in minutes.
Domain Health Check
All domains pre-screened for blacklists and past abuse. Only healthy, reputation-clean domains delivered.
Verified before purchase
Dedicated Panel for Each Domain
Every domain gets its own isolated panel. If one domain's reputation gets damaged, others remain unaffected. Complete isolation means maximum protection and zero cross-contamination.
DNS Configuration DFY
We configure DKIM, DMARC, and SPF records automatically. Your emails land in inboxes, not spam folders. Maximum deliverability without the technical headaches.
Scale with Bulk Operations
Buy multiple mailboxes at once and let AI fill in the details. Go from 1 to 100 mailboxes without the manual work. Perfect for agencies and growing teams.
How InboxKit Compares
Deliverability first, then trust, then price: see how InboxKit stacks up.
Official, paid Google Workspace and Microsoft 365 mailboxes at $3 per mailbox, flat.
All Features: 11 of 11 features
| Features | InboxKitOfficial Google Workspace | ZapMail | HyperTide | Maildoso |
|---|---|---|---|---|
Mailbox Types | Google, Microsoft 365, Azure & pre-warmed mailboxes | Google, Microsoft 365 & pre-warmed mailboxes | Google, Entra (Azure) | SMTP (rotating IPs) |
Email Warmup | Yes | Not provided | Not provided | Not provided |
Monitoring & Insights | Detailed Email Insights + InfraGuard | ZapShield only | Basic | Placement tests every 3 days + health scores |
Infra Management | Domain rotation, domain warmup + email migration | No | No | IP rotation + mailbox recovery |
Done-for-you Deliverability | Managed service available | No | No | No |
API-first & MCP | 119 REST endpoints, webhooks + MCP server | API + MCP server, $299 plan only | Not documented | API + MCP server |
Platform Integrations | 20+ | 20+ | Under 10 | 9 native |
White-label + Multi-workspace | Yes | Multi-workspace only | Not listed | Not listed |
Support | 24/7 (Slack, in-app chat & email) | 24/7 (G2 reviews raise concerns) | 4 to 24 hr response | Business hours, ~20 min reply (claimed) |
G2 Rating | 4.7 on G2 | 3.9 on G2 (7 reviews) | No ratings | 4.6 on G2 (215 reviews) |
Pricing | From $2.50/mailbox/mo, from 1 mailbox | Plans from $39 for 10 | $1500 setup fee + $25 per domain | $75 for 30 SMTP mailboxes |
Still not able to choose the platform?
See what people had to say about usHear it from the teams sending on InboxKit
Agency founders on why they moved their mailboxes to InboxKit and what changed. Play any video here, then read the full story.
15.2% reply rate at 80K emails a week
Samuel Weinstein
Co-founder & CEO, The Growth Pro
Read the case studyNo subscription plans.
One flat rate per mailbox.
Google Workspace and Microsoft 365 at the same price. Start with one mailbox today.
Google Workspace or Microsoft 365 mailbox
Free account. Pay only for the mailboxes you add.
Azure tenant
Every mailbox includes
Deliverability
- Official admin panelOne per domain, with 2FA.
- Real-time monitoringAlerts before a problem costs you replies.
Control
- 24+ platform integrationsSmartlead, Instantly, Apollo, Lemlist and more.
- Full API accessWebhooks for every event that matters.
Your team
- Unlimited membersAnd unlimited workspaces, at no extra cost.
- Email & chat supportFrom people who run this infrastructure.
Add-ons
Book your strategy call
Get personalized insights on how InboxKit can transform your email infrastructure and achieve inbox placement rates of 90%+
Tell us about your setup
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Questions? We've got answers
Quick answers to common questions.
InboxKit is your complete email infrastructure in one place. We deliver Google, Microsoft, and Azure mailboxes with zero setup fees—fully automated, fastest in the market, and integrated with 24+ sequencers. Manage all your mailboxes from a single dashboard with automated billing, InfraGuard protection, Email Analytics, Bounce Monitoring, and Inbox Placement Tests. Everything you need to land in primary, without the complexity.
InboxKit provides official Google Workspace and Microsoft 365 accounts, achieving 90%+ inbox placement rates. Unlike other providers, you get complete admin control over each domain, built-in 2FA security, app passwords for seamless integration with any email platform, and our proprietary warmup system that builds sender reputation automatically. Our infrastructure is built specifically for email outreach with advanced features like domain rotation, engagement tracking, and real-time deliverability monitoring.
Getting started takes less than 10 minutes with our completely automated setup process. Simply connect your domain, and our system instantly configures all DNS records (SPF, DKIM, DMARC), creates your mailbox account, enables 2FA security, generates app passwords for your outreach tools, and begins the automated warmup sequence. Most users see dramatic deliverability improvements within the first 24 hours, with full optimization achieved after our 14-day warmup protocol.
We have 24+ integrations live in the platform directly, or you can build your own integration smoothly. InboxKit integrates seamlessly with major email platforms including Instantly, Smartlead, Apollo, Reply, Lemlist, Plusvibe, and many more. Our universal app password system works with any SMTP-compatible platform, ensuring 100% compatibility. We also provide a comprehensive REST API and webhook notifications for real-time events. Our technical team offers free integration support to help you connect any custom tools or workflows to your InboxKit infrastructure.
We provide 24/7 expert technical support for every customer via live chat, email, and phone. Our support team consists of email deliverability specialists who can resolve complex issues quickly. High-volume customers get a dedicated Slack channel with less than a one-hour SLA, a dedicated success manager for strategic guidance, and access to our technical implementation team for custom configurations. We also offer comprehensive onboarding, regular health checks, and proactive monitoring to prevent issues before they impact your campaigns.
For Google, Microsoft, and Azure mailboxes, we complete orders in 30 to 120 minutes automatically. This includes setting up the admin panel, configuring DKIM, adding profile pictures, making accounts public, and connecting with your email sending platform.
Absolutely! Our white-glove migration service handles the complete transfer of your existing email infrastructure, campaigns, and data to InboxKit with zero downtime. The process includes: comprehensive audit of your current setup, automated data export and import, DNS record migration and optimization, campaign continuity planning, and parallel testing to ensure everything works perfectly. Most migrations complete within 24-48 hours, and our migration specialists provide step-by-step guidance throughout the process. We also offer rollback capabilities and 30 days of post-migration support to ensure a smooth transition.
Isolated Warmup is InboxKit's built-in email warmup service. It gradually increases your sending volume to build sender reputation with Google, Microsoft, and Azure mailboxes. Each mailbox warms up independently on an isolated schedule so one mailbox's activity doesn't affect another. Warmup is available as an add-on at $3 per mailbox per month from your InboxKit dashboard.
InfraGuard is InboxKit's always-on domain protection suite. It monitors your domains against blacklists every 6 hours, watches your DNS configuration for changes, tracks bounce rates across all mailboxes, and runs automated inbox placement tests. InfraGuard catches deliverability issues before they impact your campaigns. It's available as a separate add-on from your InboxKit dashboard, with the first month free.


