ConvertKit ◆
ConvertKit (now Kit) is an email-first platform that automates email marketing, newsletter growth, and digital product sales for creators.
Free·from $33/mo
About InboxKit
What is InboxKit?
InboxKit is an email infrastructure platform that provides official Google Workspace and Microsoft 365 mailboxes on US IP addresses, designed to help businesses achieve high inbox placement rates. It handles domain setup, DNS configuration, and email routing automatically, so you can start sending in under 10 minutes.
Problem it solves
Cold email senders often face domain burning and poor deliverability. InboxKit solves this by offering pre-screened fresh domains, built-in email warmup, and blacklist monitoring, ensuring your emails land in the primary inbox rather than spam.
Who it's for
Ideal for sales teams, lead generation agencies, and marketers who send volume cold emails. If you use tools like SmartLead or Heyreach, InboxKit integrates with 24+ platforms. It's not for personal email users or those needing basic email hosting.
Real use cases
Set up 10 to 1,000 mailboxes quickly, monitor deliverability with analytics, and use API webhooks to build custom workflows. Perfect for scaling outreach without losing sender reputation.
Key features
- US-IP Google & Microsoft mailboxes — Official accounts with high trust for better inbox placement.
- Quick Setup — Configure mailboxes in under one minute with automated DNS.
- Built-in Email Warmup — Automatically warm up every mailbox to improve sending reputation.
- InfraGuard Protection Suite — Blacklist monitoring, DNS monitoring, and unlimited inbox placement tests.
- Full API Access & Webhooks — Build custom workflows with comprehensive API access.
- 24+ Integrations — Works with various email tools and platforms.
- Analytics Dashboard — Track bounce rates, reply rates, and email-level insights.
SaaSpartout Score
7.8
/10
Editorial score from our review methodology — not user ratings.
InboxKit Pricing
InboxKit pricing: from $2.50/mo per mailbox.
Professional
$31/month for small teams: 10 mailbox slots, $30 per Azure tenant, $3.1 per additional mailbox, official admin panel with 2FA, real-time monitoring, 24+ integrations, unlimited team members, full API access, email & chat support.
Agency (Most Popular)
$81/month for growing teams: 30 mailbox slots, $30 per Azure tenant, $2.7 per additional mailbox, all Professional features, plus priority support.
Enterprise
Custom pricing for large organizations. Contact InboxKit for details.
All plans include automated DNS, admin access, and 24+ integrations. No setup fees. Google Workspace and Microsoft 365 mailboxes from $2.50/mo on annual billing. Email warmup add-on available at $3/mailbox/mo. InfraGuard is free for the first month.
Frequently asked questions
What is InboxKit and how does it work?
InboxKit is an email infrastructure platform that provides official Google and Microsoft mailboxes on US IP addresses. It automates domain setup, DNS configuration, and includes built-in warmup to improve email deliverability, so you can start sending in under 10 minutes.
How much does InboxKit cost?
InboxKit pricing starts at $2.50 per mailbox per month on annual billing for Google Workspace or Microsoft 365. Monthly plans start at $31 for the Professional plan (10 mailbox slots) and $81 for the Agency plan (30 mailbox slots).
Is there a free trial or free plan?
No free trial is mentioned on InboxKit's site. However, they offer a 'Quick Setup' and a reward program where you can earn wallet credits for leaving reviews, which can be used towards mailbox purchases.
Who is InboxKit best for?
InboxKit is best for sales teams, lead generation agencies, and marketers who run cold email campaigns and need high deliverability at scale. It's not for personal email users or those needing simple email hosting.
What are the top alternatives to InboxKit?
Alternatives include Google Workspace, Microsoft 365, and other email infrastructure tools like SmartLead or Heyreach. InboxKit differentiates with US IP addresses, built-in warmup, and 24+ integrations.
Does InboxKit offer a free trial?
No, but they have a 'Reward & Review Program' where you can earn credits by leaving reviews on G2, LinkedIn, or Google, which can be used towards mailbox purchases. There's also a first-month free for InfraGuard add-on.
