InboxKit vs Zapmail
Pricing last verified from each vendor's own site.
Verdict
Both sell pre-configured Google and Microsoft mailboxes for cold email. InboxKit charges a flat $3/mailbox/mo ($2.50 annual) with no plan minimums, plus pre-warmed mailboxes from $6/mo. Zapmail sells plans: Starter $39/mo for 10 mailboxes (extra $3.50 each), Growth $99/mo for 30 and Pro $299/mo for 100.
- Consider InboxKit if: You want simple per-mailbox pricing with no plan to clear.
- Consider Zapmail if: You want a bundled plan, with API access on Pro.
Factual summary
- Both are listed under Email Deliverability & Warmup.
- Lowest listed monthly price: InboxKit $3, Zapmail $39 (plans and billing terms differ; check each vendor page).
This is a factual comparison drawn from vendor sites, not a recommendation. Which fits depends on your channels, volume and budget.
| InboxKit | Zapmail | |
|---|---|---|
| Summary | Cold email infrastructure: buys and configures Google Workspace and Microsoft 365 mailboxes with automated DNS. | Cold email infrastructure: pre-configured Google and Microsoft mailboxes with automated SPF, DKIM and DMARC. |
| Starting price | From $3/mo | From $39/mo |
| Pricing details | One flat rate per mailbox: $3.00/mailbox/mo monthly or $2.50 annual (Google Workspace or Microsoft 365); Azure $30 per tenant/mo (up to 100 mailboxes); pre-warmed mailboxes $6–$9/mo by warmup age plus a one-time domain fee from $12.50 | Starter $39/mo (10 Google/Microsoft mailboxes, extra $3.50/mailbox); Growth $99/mo (30); Pro $299/mo (100, API) |
| Model | usage | subscription |
| Free trial | — | — |
| Free plan | — | — |
| Channels | ||
| Last verified | 2026-10-30 | 2026-10-28 |
FAQ
What is the difference between InboxKit and Zapmail?
Both sell pre-configured Google and Microsoft mailboxes for cold email. InboxKit charges a flat $3/mailbox/mo ($2.50 annual) with no plan minimums, plus pre-warmed mailboxes from $6/mo. Zapmail sells plans: Starter $39/mo for 10 mailboxes (extra $3.50 each), Growth $99/mo for 30 and Pro $299/mo for 100.
Which is cheaper, InboxKit or Zapmail?
InboxKit has the lower listed entry price ($3 vs $39 per month), but plan limits and billing terms differ.
When should I choose InboxKit over Zapmail?
Consider InboxKit if: You want simple per-mailbox pricing with no plan to clear. Consider Zapmail if: You want a bundled plan, with API access on Pro.
More options
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- Premium Inboxes vs Zapmail
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