Line by line
| Feature | Inboxkit | Zapmail |
|---|---|---|
| Mailboxes | Official, paid Google Workspace and Microsoft 365, plus Azure | Google Workspace and Microsoft 365 |
| Claude Code / Codex (MCP) | Remote MCP server, connects to Claude Code and Codex | Official MCP server, 134 tools |
| Admin panel access | Complete admin panel access for every domain | Admin credentials for Microsoft; Google not stated |
| How you buy | $3 a mailbox, no plans, no minimums | Plans: $39 for 10, $99 for 30, $299 for 100 slots |
| Unused capacity | You pay only for the mailboxes you add | Unused slots reset each billing cycle |
| After 12 months | $3 a mailbox, or $2.50 annual, at today’s published rate | Google renewal: $49, $149 or $449 base, extras $4.50 to $5.00 |
| Lowest listed rate | $2.50 a mailbox on annual billing | $2.50 per extra mailbox on yearly Pro, first year |
| Azure | $30 a tenant for up to 100 mailboxes | Not listed |
| API access | Full REST API and webhooks on every account | On the Pro plan ($299 a month) |
| Warmup (add-on) | 14-day warmup on an isolated network, $3 a mailbox | Zapwarm add-on, $1 to $2 a mailbox |
| Domain monitoring (add-on) | InfraGuard every six hours: blacklists, DNS, bounces, placement, auto-pause | ZapCare $1.50 or ZapShield $3 a domain: daily blacklist and DNS checks |
Competitor details from public pages, checked 19 Oct 2026. Sources: Zapmail pricing (homepage) (zapmail.ai); Zapmail subscriptions and plans (help.zapmail.ai); Zapmail pricing after 1 year (help.zapmail.ai); Zapwarm (help.zapmail.ai); ZapCare and ZapShield (help.zapmail.ai); Zapmail pre-warmed mailboxes (help.zapmail.ai); Zapmail MCP server (docs.zapmail.ai); Inboxkit pricing.
Competitor offers can change after that date. Trademarks belong to their owners.
Prices at common volumes
| Mailboxes | Inboxkit, monthly | Inboxkit, annual | Zapmail, year one | Zapmail, after 12 months (Google) |
|---|---|---|---|---|
| 10mailboxesStarter plan, $39 for 10 slots | Inboxkit, monthly$30 | Inboxkit, annual$25 | Zapmail, year one$39 | Zapmail, after 12 months (Google)$49 |
| 30mailboxesGrowth plan, $99 for 30 slots | Inboxkit, monthly$90 | Inboxkit, annual$75 | Zapmail, year one$99 | Zapmail, after 12 months (Google)$147 |
| 100mailboxesPro plan, $299 for 100 slots | Inboxkit, monthly$300 | Inboxkit, annual$250 | Zapmail, year one$299 | Zapmail, after 12 months (Google)$449 |
| 1,000mailboxes10 × Pro plans at $299 | Inboxkit, monthly$3,000 | Inboxkit, annual$2,500 | Zapmail, year one$2,990 | Zapmail, after 12 months (Google)$4,490 |
From 100 mailboxes, Zapmail is about $1 cheaper per 100 in year one. Our annual rate is $2.50 a mailbox.
Zapmail prices are its published monthly-billing rates. Year two uses its published Google Workspace renewal rates; Microsoft renewal terms are not published. Ours is today’s published rate. Yearly billing: from $2.50 an extra mailbox on Pro, first year.
Zapmail pricing against Inboxkit
Zapmail sells plans of slots. Starter is $39 for 10, Growth $99 for 30 and Pro $299 for 100, on monthly billing in year one. Extra mailboxes cost $3.50, $3.25 or $3.00. Unused slots reset each billing cycle.
After 12 months, Zapmail’s Google mailboxes move to renewal rates: $49, $149 or $449 a plan, and $4.50 to $5.00 an extra mailbox. Inboxkit is $3 a mailbox on monthly billing, or $2.50 on annual, with no plan.
At 1,000 Google mailboxes, Zapmail costs $2,990 a month in year one and $4,490 or more after it. Inboxkit is $3,000 at today’s published rate.
Zapmail mailboxes, Microsoft and Azure
Both sell Google Workspace and Microsoft 365 mailboxes, and since 13 October 2026 Zapmail lets you assign both under one plan. Zapmail’s homepage and the help articles we checked do not mention Azure.
Inboxkit runs Microsoft volume on Azure: one tenant holds up to 100 mailboxes for $30 a month. Pre-warmed mailboxes are live in hours. Zapmail’s pre-warmed mailboxes carry 12 or more weeks of history, last 12 months and cannot be renewed.
Zapmail setup and domains
Zapmail’s homepage states an average setup time of 5 minutes, fully automated. Inboxkit completes orders in 30 to 120 minutes, automatically, with SPF, DKIM and DMARC configured for you.
On Inboxkit you buy domains or connect your own in one click. Domain rotation, domain warmup and email migration are built in.
Zapmail warmup and monitoring
Zapmail sells Zapwarm for $1 to $2 a mailbox, and ZapCare or ZapShield at $1.50 or $3 a domain for daily blacklist and DNS checks. Its plans include 3, 10 or 30 deliverability test credits a month.
Inboxkit’s warmup runs for 14 days on an isolated network, at $3 a mailbox. InfraGuard checks blacklists, DNS, bounces and inbox placement every six hours, with alerts and auto-pause. Both are add-ons, and InfraGuard’s first month is free.
Zapmail API, MCP and automation
Zapmail lists API access on its Pro plan, $299 a month. It publishes an official MCP server with 134 tools; its docs do not say which plans can use it.
Every Inboxkit account gets the full REST API, with 119 endpoints and webhooks. Connect Claude Code or Codex to Inboxkit’s remote MCP server to run your mailbox work from an agent.
Zapmail reviews and support
Inboxkit is rated 4.7 out of 5 on G2 from 120 reviews.
Inboxkit support runs 24/7 on Slack, in-app chat and email, and every account gets unlimited team members and workspaces.
Switch from Zapmail in four steps
Create a free account
Pay only for the mailboxes you add. No plan to pick first.
Buy or connect domains
Then add Google Workspace, Microsoft 365 or Azure mailboxes on them.
Export to your sequencer
One click to 24+ sequencers, including Smartlead and Instantly.
Run both side by side
Warm up here while Zapmail keeps sending. Move campaigns before your plan renews.
Questions about Zapmail
Is Inboxkit cheaper than Zapmail?
In year one they are close: 1,000 Google mailboxes cost $2,990 a month on Zapmail and $3,000 on Inboxkit. After 12 months Zapmail’s Google renewal rates put the same 1,000 at $4,490 or more. Our $3,000 is today’s published rate.
How does Zapmail pricing work?
Zapmail sells plans of 10, 30 or 100 slots for $39, $99 or $299 a month in year one, plus a price for each extra mailbox. Unused slots reset each billing cycle.
Does Zapmail offer Azure mailboxes?
Its homepage and the help articles we checked do not mention Azure. On Inboxkit, one Azure tenant holds up to 100 Microsoft mailboxes for $30 a month.
Does Zapmail have an API and an MCP server?
Zapmail lists API access on its $299 Pro plan and publishes an MCP server with 134 tools. Inboxkit includes the REST API and a remote MCP server on every account.
Is Zapmail legit?
Zapmail is a real, working mailbox provider with published prices.
How do I move from Zapmail to Inboxkit?
Open a free account, buy or connect domains, and add mailboxes. Export them in one click to your sequencer. Keep Zapmail sending until your campaigns have moved.
Open a free account
$3 a mailbox, no minimum. Google Workspace, Microsoft 365 and Azure.
