Mission Inbox vs Zapmail
Mission Inbox (Dedicated-IP outbound mailboxes) and Zapmail (Google & Microsoft mailboxes) are both popular cold email infrastructure picks. For 30 mailboxes on 10 domains, Zapmail is cheaper at $107.72/mo vs $207.72/mo for Mission Inbox, a difference of $100 a month ($1200 a year).
Last updated 2026-11-02 · list prices, monthly billing
Verdict by use case
Side by side
| Mission Inbox | Zapmail | |
|---|---|---|
| Mailbox type | Private SMTP | Google/Microsoft reseller |
| Platform | SMTP | GoogleMicrosoft |
| Per mailbox / month | $3.33 Lite: $50/month for 15 mailboxes and 5,000 sends. Scale: $199/month for 30 mailboxes and 10,000 sends. Warmup emails count as sends. | $3.30 Plan prices ($39/10, $99/30, $299/100) from a third-party table (outboxes.io/compare); Zapmail's own page lists additional mailboxes at $3.50 / $3.25 / $3.00 by plan but plan totals did not render. |
| 30 mailboxes / month | $199 | $99 |
| + 10 domains / month | $8.72 * | $8.72 * |
| Total / month | $207.72 | $107.72 |
| Minimum | 15 mailboxes (Lite) | 10 mailboxes (starter plan, third-party) |
| Warmup | Unknown | Optional |
| Sending cap | 10,000 sends/month on the Scale plan (warmup counts) | None published |
| Price source | Provider page | Third-party table |
* Reference .com price used (provider domain price not published).
Frequently asked questions
Is Mission Inbox cheaper than Zapmail?
For 30 mailboxes + 10 domains on monthly list prices, Zapmail is cheaper: $107.72/mo vs $207.72/mo (checked 2026-11-02).
What's the difference between Mission Inbox and Zapmail?
Mission Inbox: Dedicated-IP outbound mailboxes, $3.33 per mailbox, minimum 15 mailboxes (lite), warmup unknown. Zapmail: Google & Microsoft mailboxes, $3.30 per mailbox, minimum 10 mailboxes (starter plan, third-party), warmup optional.
Which is better for cold email, Mission Inbox or Zapmail?
On price, Zapmail wins for a 30-inbox setup. Beyond price, compare platform (SMTP vs Google/Microsoft), minimums and warmup. MailboxWatch doesn't test deliverability.