InboxKit Pricing: Full Breakdown
Full breakdown of InboxKit pricing, included features, and how it compares to other infrastructure providers. Here is what you actually pay per mailbox.
Bottom line
InboxKit charges $2.50 per mailbox per month for Google Workspace, Microsoft 365, or Azure mailboxes. That includes automated DNS, built-in warmup, inbox placement testing, email verification, and blacklist monitoring. No other infrastructure provider bundles this much at this price.
It is the best value for teams that want infrastructure and deliverability in one place.
InboxKit Plans
| Plan | Price | What you get | Watch out for |
|---|---|---|---|
| Per Mailbox flat rate per mailbox | $2.50/mailbox/mo |
|
|
All-inclusive from $99/mo
Dedicated IPs, warmup, validation, inbox testing, blacklist monitoring. No add-ons.
InboxKit vs SendKit
| InboxKit |  | |
|---|---|---|
| Price per Mailbox | N/A (this is InboxKit) | |
| Google Workspace | - | |
| Microsoft 365 | - | |
| Built-in Warmup | - | |
| Inbox Placement Testing | - | |
| Email Verifier | - | |
| Blacklist Checker | - | |
| DNS Automation | - | |
| US IPs | - | |
| API Access | - |
Total cost at different scales
30 mailboxes
Infrastructure cost only
InboxKit
$75/mo
SendKit
N/A (sending platform)
100 mailboxes
Add SendKit from $99/mo for sending
InboxKit
$250/mo
SendKit
N/A
300 mailboxes
Volume discount may apply
InboxKit
$750/mo
SendKit
N/A
How InboxKit Pricing Works
InboxKit uses a simple per-mailbox pricing model. You pay $2.50 per mailbox per month regardless of whether you choose Google Workspace, Microsoft 365, or Azure. There are no base fees, no tier gates, and no feature lockouts.
Every mailbox gets the full feature set including warmup, verification, placement testing, and blacklist monitoring. This is the most transparent pricing model in the email infrastructure space. Most competitors either charge base fees (Zapmail: $39-$299/mo) or add hidden costs for features like dedicated IPs (Infraforge: $99/mo extra) or domain masking (Infraforge: $2/domain/mo).
Key takeaways
- $2.50/mailbox flat rate, no base fees or tiers
- All features included: warmup, verification, placement testing, blacklist monitoring
- Works with Google Workspace, Microsoft 365, and Azure
- Most transparent pricing in the infrastructure space
Cost at Scale
At 50 mailboxes, InboxKit costs $125/mo. At 100 mailboxes, $250/mo. At 200 mailboxes, $500/mo.
Compare that to Zapmail Pro (100 mailboxes at $299/mo), Infraforge (100 mailboxes at roughly $450/mo with dedicated IP), or buying Google Workspace directly ($6/user/mo minimum, or $600/mo for 100 users). InboxKit is cheaper than every alternative except Maildoso SMTP ($1.90/mailbox) and Mailforge ($2/mailbox), and those providers do not include any deliverability tools.
Key takeaways
- 50 mailboxes: $125/mo
- 100 mailboxes: $250/mo
- 200 mailboxes: $500/mo
- Cheaper than Zapmail, Infraforge, and direct Google Workspace
All-inclusive from $99/mo
Dedicated IPs, warmup, validation, inbox testing, blacklist monitoring. No add-ons.
Keep reading
Got questions? We've got answers.
InboxKit costs $2.50 per mailbox per month. This includes Google Workspace, Microsoft 365, or Azure mailboxes with automated DNS, built-in warmup, inbox placement testing, email verification, and blacklist monitoring.
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