Line by line
| Feature | Inboxkit | Infraforge |
|---|---|---|
| Mailboxes | Official Google Workspace, Microsoft 365 and Azure | Private infrastructure on dedicated servers and IPs |
| Shortest term | Monthly, $3 a mailbox | Quarterly, $12 a slot a quarter; no monthly option |
| Annual price | $2.50 a mailbox a month ($30 a year) | $40 a slot a year at list, falling to $30 at volume |
| Minimum | None | 10 slots, charged whether or not mailboxes are created |
| Warmup (add-on) | 14-day warmup on an isolated network, $3 a mailbox | Not in the subscription; Warmforge is sold separately |
| Monitoring (add-on) | InfraGuard add-on, every six hours: blacklists, DNS, bounces, placement, auto-pause | No check type or frequency stated; health checks sit in Warmforge |
| Extras | Domain rotation, domain warmup and email migration built in | SSL and domain masking add-on; Masterbox $7 to $9 a workspace a month |
| API and MCP | REST API, webhooks and a remote MCP server on every account | API, MCP server and CLI |
Competitor details from public pages, checked 28 Oct 2026. Sources: Infraforge pricing (infraforge.ai); Infraforge homepage (infraforge.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 | Infraforge |
|---|---|---|---|
| 30mailboxesInfraforge on annual billing, shown a month | Inboxkit, monthly$90 | Inboxkit, annual$75 | Infraforge$100 |
| 90mailboxesInfraforge on annual billing, shown a month | Inboxkit, monthly$270 | Inboxkit, annual$225 | Infraforge$300 |
Above 1,000 add-on slots, Infraforge annual falls to $30 a slot a year, matching ours.
Infraforge has no monthly option, so its column is annual billing, shown a month. Set it against our annual column. Infraforge lists $40 a slot a year, 10 slots at least. Additional dedicated IPs are $99 an IP a month, billed quarterly.
Infraforge pricing against Inboxkit
Infraforge sells mailbox slots, with a minimum of 10, billed quarterly or yearly. There is no monthly option. A slot is $12 a quarter, and add-on slots fall by $0.30 per 100 to $9 above 1,000. Slots are charged whether or not mailboxes are created.
Yearly billing gives 2 months free: $40 a slot a year at list, down to $30 at volume. Additional dedicated IPs are $99 an IP a month, billed quarterly. SSL and domain masking are a paid add-on.
Inboxkit is $3 a mailbox on monthly billing, or $2.50 on annual, with no minimum. At 25 mailboxes, Infraforge is $300 a quarter, which is $100 a month. Inboxkit is $75 a month at today’s published rate.
Infraforge mailboxes against Google and Microsoft
Infraforge runs private email infrastructure on dedicated servers and IPs. Its mailboxes are not Google Workspace or Microsoft 365 accounts.
Inboxkit sells official, paid Google Workspace and Microsoft 365 mailboxes at the same $3. Microsoft volume can run on Azure, where one tenant holds up to 100 mailboxes for $30 a month. Pre-warmed mailboxes are live in hours.
Infraforge warmup and monitoring
Infraforge’s homepage mentions real-time deliverability monitoring and alerts. Warmup is not part of the subscription; it is sold separately through Warmforge. Warmforge also runs the DNS, MX and blacklist health checks.
Inboxkit’s warmup is a $3 add-on that runs for 14 days on an isolated network. InfraGuard, also an add-on, checks blacklists, DNS, bounces and inbox placement every six hours. It includes alerts, auto-pause and unlimited placement tests. Its first month is free.
Infraforge API, MCP and automation
Infraforge 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.
Infraforge setup, support and team access
Infraforge says a first domain and mailbox can be ready in 5 minutes, with SPF, DKIM and DMARC set up automatically. Inboxkit completes orders in 30 to 120 minutes, automatically, with SPF, DKIM and DMARC configured for you. Mailboxes export in one click to 24+ sequencers.
Inboxkit is rated 4.7 out of 5 on G2 from 120 reviews. Support runs 24/7 on Slack, in-app chat and email, and every account gets unlimited team members and workspaces.
Switch from Infraforge 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 Infraforge keeps sending. Move campaigns before your plan renews.
Questions about Infraforge
How does Infraforge pricing work?
Infraforge sells mailbox slots, from a minimum of 10, billed quarterly or yearly. A slot is $12 a quarter or $40 a year at list, and less at volume. Additional dedicated IPs are $99 an IP a month.
Is Inboxkit cheaper than Infraforge?
At small volume, yes. On Infraforge, 25 mailboxes cost $300 a quarter, or $100 a month. Here they cost $75 a month. At volume, its yearly slot falls to $30, or $2.50 a month, the same as our annual rate.
Does Infraforge sell Google Workspace or Microsoft 365 mailboxes?
No. Infraforge runs private email infrastructure on dedicated servers and IPs. Inboxkit sells official, paid Google Workspace and Microsoft 365 mailboxes.
Can I pay Infraforge monthly?
No. Infraforge bills quarterly or yearly, with no monthly option. Inboxkit bills $3 a mailbox monthly, or $2.50 a month on annual billing.
Does Infraforge have an API and an MCP server?
Yes. Infraforge includes API access and lists an MCP server and a CLI. Inboxkit includes a REST API with 119 endpoints and a remote MCP server on every account.
How do I move from Infraforge to Inboxkit?
Open a free account, buy or connect domains, and add mailboxes. Export them in one click to your sequencer. Keep Infraforge sending until your campaigns have moved.
Open a free account
$3 a mailbox, no minimum. Google Workspace, Microsoft 365 and Azure.
