Line by line
| Feature | Inboxkit | Primeforge |
|---|---|---|
| Mailboxes | Official, paid Google Workspace and Microsoft 365, plus Azure | Google Workspace and Microsoft 365, one tenant per domain |
| Claude Code / Codex (MCP) | Remote MCP server, connects to Claude Code and Codex | MCP server, CLI and API listed |
| Monthly price | $3 a mailbox | $4.50 a mailbox, falling with volume to $3.50 |
| Annual price | $2.50 a mailbox a month | $3.75 at list, about $2.92 above 1,000 add-on slots |
| Minimum | None | 10 slots, charged whether or not mailboxes are created |
| Azure | $30 a tenant for up to 100 mailboxes | Not listed |
| Domains | Buy or connect your own | .com $14 a year; connecting your own has a fee |
| Support | 24/7 on Slack, in-app chat and email | Live chat 24 hours a day, 5 days a week |
| Warmup (add-on) | 14-day warmup on an isolated network, $3 a mailbox | Sold separately through Warmforge, $6 to $12 a slot |
| Monitoring (add-on) | InfraGuard every six hours: blacklists, DNS, bounces, placement, auto-pause | In Warmforge: DNS, MX and blacklist health checks |
| Inbox placement tests (add-on) | Unlimited with InfraGuard | 1 free a month; paid plans $39 or $169 a month |
Competitor details from public pages, checked 19 Oct 2026. Sources: Primeforge pricing (primeforge.ai); Primeforge homepage (domains, Microsoft tenants) (primeforge.ai); Primeforge terms (primeforge.ai); Warmforge pricing (warmforge.ai); Inboxkit pricing.
Competitor offers can change after that date. Trademarks belong to their owners.
Prices at common volumes
| Mailboxes | Inboxkit, monthly | Inboxkit, annual | Primeforge |
|---|---|---|---|
| 100mailboxes | Inboxkit, monthly$300 | Inboxkit, annual$250 | Primeforge$450 |
| 500mailboxesPrimeforge volume rate of $4.10 on 490 add-on slots | Inboxkit, monthly$1,500 | Inboxkit, annual$1,250 | Primeforge$2,054 |
| 1,000mailboxesPrimeforge volume rate of $3.60 on 990 add-on slots | Inboxkit, monthly$3,000 | Inboxkit, annual$2,500 | Primeforge$3,609 |
Both on monthly billing. On annual billing Primeforge is $3.75 at list, about $2.92 above 1,000 add-on slots. Ours is $2.50.
Primeforge pricing against Inboxkit
Primeforge sells mailbox slots at $4.50 a month, with a minimum of 10. Each slot is charged whether or not you create a mailbox. Add-on slots get $0.10 cheaper for every 100, down to $3.50 above 1,000.
Annual billing gives 2 months free. That is $3.75 a slot a month at list, and about $2.92 above 1,000 add-on slots. Inboxkit is $3 a mailbox monthly, or $2.50 on annual, with no minimum.
At 1,000 mailboxes on monthly billing, Primeforge costs $3,609 and Inboxkit $3,000. On annual billing it is $3,007.50 a month against $2,500, at today’s published rate.
Primeforge mailboxes, Microsoft and Azure
Both sell Google Workspace and Microsoft 365 mailboxes. Primeforge sets up one Microsoft tenant per domain. Its homepage and pricing page do not mention Azure or Entra.
Inboxkit runs Microsoft volume on Azure: one tenant holds up to 100 mailboxes for $30 a month. Pre-warmed mailboxes are live in hours. Primeforge also sells pre-warmed mailboxes, with no price on the page.
Primeforge setup and domains
Primeforge’s homepage says mailboxes are configured automatically and ready to send in 30 minutes. It sells .com domains at $14 a year, and connecting a domain you already own carries a fee.
On Inboxkit you buy domains or connect your own in one click. SPF, DKIM and DMARC are configured automatically. Domain rotation, domain warmup and email migration are built in.
Primeforge warmup, monitoring and placement tests
Warmup is not part of the Primeforge subscription. Warmforge sells it per slot, from $12 down to $6 by volume, with one free slot. Warmforge also runs DNS, MX and blacklist health checks.
Warmforge includes one placement test a month, and placement plans cost $39 or $169 a month. Its page states no check frequency.
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 unlimited placement tests. Both are add-ons, and InfraGuard’s first month is free.
Primeforge API, MCP and automation
Primeforge includes API access in its subscription and lists an MCP server and a CLI.
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.
Primeforge reviews and support
Inboxkit is rated 4.7 out of 5 on G2 from 120 reviews.
Primeforge’s live chat runs 24 hours a day, 5 days a week. Inboxkit support runs 24/7 on Slack, in-app chat and email.
Switch from Primeforge 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 Primeforge keeps sending. Move campaigns before your plan renews.
Questions about Primeforge
Is Inboxkit cheaper than Primeforge?
Yes. Primeforge’s lowest rates are $3.50 a month, or about $2.92 on annual, against our $3 and $2.50. At 1,000 mailboxes on monthly billing, that is $3,609 against $3,000.
How does Primeforge pricing work?
You buy at least 10 slots at $4.50 a month. Add-on slots get $0.10 cheaper for every 100, down to $3.50 above 1,000. Annual billing gives 2 months free.
Does Primeforge offer Azure?
Its homepage and pricing page do not mention Azure or Entra. It sells Microsoft 365 with one tenant per domain. On Inboxkit, one Azure tenant holds up to 100 Microsoft mailboxes for $30 a month.
Does Primeforge include warmup?
No. Warmup is sold per slot through Warmforge, from $12 down to $6 by volume, with one free slot. Inboxkit’s 14-day warmup is a $3 add-on.
Does Primeforge have an MCP server?
Primeforge lists an MCP server and a CLI, and includes API access. Inboxkit includes the REST API and a remote MCP server on every account.
Is Primeforge legit?
Primeforge is a working provider of Google Workspace and Microsoft 365 mailboxes, with published prices.
How do I move from Primeforge to Inboxkit?
Open a free account, buy or connect domains, and add mailboxes. Export them in one click to your sequencer. Keep Primeforge sending until your campaigns have moved.
Open a free account
$3 a mailbox, no minimum. Google Workspace, Microsoft 365 and Azure.
