Zapmail vs Maildoso
Zapmail (Google & Microsoft mailboxes) and Maildoso (SMTP mailboxes) are both popular cold email infrastructure picks. For 30 mailboxes on 10 domains, Maildoso is cheaper at $87.50/mo vs $107.72/mo for Zapmail, a difference of $20.22 a month ($242.64 a year).
Last updated 2026-10-23 · list prices, monthly billing
Verdict by use case
Side by side
| Zapmail | Maildoso | |
|---|---|---|
| Mailbox type | Google/Microsoft reseller | Shared SMTP |
| Platform | GoogleMicrosoft | SMTP |
| Per mailbox / month | $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. | $2.50 $75/month for 30; $225 for 300 ($0.75); $499 for 1,000 ($0.49). Cap: 15 cold emails/mailbox/day. |
| 30 mailboxes / month | $99 | $75 |
| + 10 domains / month | $8.72 * | $12.50 |
| Total / month | $107.72 | $87.50 |
| Minimum | 10 mailboxes (starter plan, third-party) | 30 mailboxes |
| Warmup | Optional | No |
| Sending cap | None published | 15 cold emails per mailbox per day |
| Price source | Third-party table | Provider page |
* Reference .com price used (provider domain price not published).
Frequently asked questions
Is Zapmail cheaper than Maildoso?
For 30 mailboxes + 10 domains on monthly list prices, Maildoso is cheaper: $87.50/mo vs $107.72/mo (checked 2026-10-23).
What's the difference between Zapmail and Maildoso?
Zapmail: Google & Microsoft mailboxes, $3.30 per mailbox, minimum 10 mailboxes (starter plan, third-party), warmup optional. Maildoso: SMTP mailboxes (15 sends/day cap), $2.50 per mailbox, minimum 30 mailboxes, warmup no.
Which is better for cold email, Zapmail or Maildoso?
On price, Maildoso wins for a 30-inbox setup. Beyond price, compare platform (Google/Microsoft vs SMTP), minimums and warmup. MailboxWatch doesn't test deliverability.