Maildoso vs Zapmail (2026): which should you pick?
As of Nov 12, 2026, Maildoso and Zapmail share a 1.4 GPA, neither has a free plan, and Zapmail starts cheaper, at $39 a month against $75 a month.
Checked Nov 12, 2026 · graded Nov 12, 2026 by ToolGPA
Maildoso grades higher on platforms. Zapmail grades higher on value for money. They get the same grade on the free plan, features and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Which one is for you
Pick Maildoso if
- Fits if you need 30 or more mailboxes for an outbound team
- Works for senders who already run Instantly or Smartlead
Look elsewhere if
- Skip it if you need just a few mailboxes, since 30 is the smallest block
- Not for you if you want a trial or a discount, because neither exists
- Watch out: domains cost extra, $15 a year or $11.90 a month pre-warmed
- Tight if you want volume per mailbox: 15 cold emails a day each
Pick Zapmail if
- Fits if you run cold email from many Google mailboxes and want domains and DNS done for you
- Works for agencies that create client mailboxes in bulk through an API
Look elsewhere if
- Skip it if you want a try first, as there is no free plan or trial
- Pricey if you grow: 10 mailboxes are $39, 30 are $99, 100 are $299
- Watch out: Google Workspace mailbox pricing rises after the first year
- Watch out: API access is on Pro only, and the prices shown are monthly while quarterly and yearly tabs differ
- Not for you if you want to write or send campaigns, since it is mailbox infrastructure only
How we grade them
| 1.4GPAMaildosoWeak | 1.4GPAZapmailWeak | |
|---|---|---|
| Value for money | D$75 a month for 30 mailboxes is the smallest plan, which is where the category's dearest tenth begins. Domains aren't included. It is cheaper per mailbox as blocks grow. | C$39 a month for 10 mailboxes billed monthly is the middle of cold outreach tools. Extra mailboxes are $3.50 each, and Google raises its mailbox price after a year. |
| Free plan and trial | FNo free plan and no trial on record. It also has a no-discount policy. | FNo free plan and no trial on the page. A free tools menu exists, but the product itself starts at $39. |
| Features | DMailboxes and DNS only. It is infrastructure and needs a separate sender, and each mailbox is capped at 15 cold emails a day. | DIt buys domains, sets DNS, creates mailboxes and connects them to a sending tool. It sends nothing itself, so it needs an outreach tool next to it. |
| Ease of use | CNo store rating on record. Mailboxes come set up, but new ones need about 14 days of warm-up and a sender to connect. | CNo store rating on record. The vendor says setup averages 5 minutes, but you still have to connect the mailboxes to a sender and manage domains. |
| Platforms and integrations | BWeb, exporting to Instantly, Smartlead, Saleshandy and EmailBizon. | CWeb only and Google Workspace only. An API is on the $299 Pro plan. |
| Best for | blocks of cold-email mailboxes | buying Google Workspace mailboxes for cold email |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Maildoso and Zapmail. How we grade
Price against what you get
Maildoso starts at $75 a month and scores 2.0 out of 4 on features, ease of use and platforms. Zapmail starts at $39 a month and scores 1.7.
Maildoso scores higher, and starts $36 a month higher: the question is whether the extra is worth that to you. Of the other cold outreach tools on the chart, 30 score higher than Maildoso for less, and 21 score higher than Zapmail for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Maildoso also covers dMARC.
- Zapmail also covers inbox warm-up.
At a glance
| Maildoso | Zapmail | |
|---|---|---|
| Pricing | Paid | Paid |
| Starts at | $75 per month for 30 mailboxes | $39 per month for 10 Google Workspace mailboxes, billed monthly |
| Free plan | None | None |
| Free trial | None listed | None listed |
| Web | ||
| Made by | BacklinkSwappers, inc. | Outbox Labs Inc. |
| Price read from | maildoso.ai | zapmail.ai |
| Checked | Nov 12, 2026 | Nov 12, 2026 |
Worth knowing
Maildoso
- Each mailbox sends at most 15 cold emails and 80 warm-up emails a day, and new mailboxes still need about 14 days of warm-up unless they sit on pre-warmed domains.
- Domains are not included in monthly plans: registration is $15 a year and a pre-warmed domain is $11.90 a month.
- Quarterly plans with domains included are labeled legacy on the pricing page; the monthly blocks are the current plans.
- Subscriptions are canceled through support chat or email, and the page says it has a no-discount policy with no promotions.
Zapmail
- The listed prices are monthly; the page also has quarterly and yearly tabs, and its description says annual plans start from $2.50 per inbox.
- Google Workspace mailbox pricing rises after the first year, and mailboxes that have completed a year are charged at the updated price.
- It supplies mailboxes and domains only; campaigns are sent from a separate outreach tool.
- API access is on the Pro plan only; volume pricing for larger senders is by talking to sales.
Key features
Maildoso
- Mailboxes built for outbound
- Dedicated mailboxes on the vendor's own servers and IPs, with IP rotation and automatic replacement of IPs that stop working.
- Automatic DNS setup
- SPF, DKIM and DMARC records are configured when you register mailboxes under a domain bought or connected through the dashboard.
- Self-healing and health scores
- Burned-out mailboxes are disconnected from campaigns for 14 days, and inbox placement tests run every 3 days with a health score per mailbox.
- Sequencer export
- Mailboxes can be exported to outreach platforms; Instantly, Smartlead and EmailBizon sync with one click, and the vendor says 9 sequencers are supported.
- API and MCP server
- Register domains, create mailboxes and push them to a sequencer from code or from an AI assistant such as Claude.
- Pre-warmed domains
- Domains warmed in advance, each holding up to 50 mailboxes, so new mailboxes can start sending without the usual 14-day wait.
Zapmail
- Automated mailbox setup
- Creates Google Workspace mailboxes, sets DNS records and connects them to an outreach tool. The site gives an average setup time of 5 minutes.
- Domains
- Customers can bring their own domains or buy new ones, and each workspace holds one domain to keep sending reputations separate.
- Pre-warmed mailboxes
- A separate pre-warmed option is sold with domains included, starting from $6 per mailbox, to skip the first 3 to 4 weeks of warm-up.
- ZapShield
- Daily blacklist monitoring at $3 per domain a month, with a free replacement domain if one is listed.
- Deliverability test and AI Insights
- Monthly credits for inbox placement tests and AI-generated insights are included on every plan.
- API
- An API for creating mailboxes and domains from another product is included on the Pro plan.
Plans
Maildoso
30 mailboxes$75
per month for 30 mailboxes ($2.50 each)
Aimed at early-stage teams. Up to 15 cold emails a day per mailbox, plus the features every plan includes.
300 mailboxes$225
per month for 300 mailboxes ($0.75 each)
Aimed at expanding teams. Same features and 15-a-day limit per mailbox as the smaller block.
1,000 mailboxes$499
per month for 1,000 mailboxes ($0.49 each)
Aimed at large-scale campaigns. Same features and per-mailbox limit.
Zapmail
Starter$39
per month for 10 Google Workspace mailboxes, billed monthly
Extra mailboxes at $3.50 each; 3 deliverability test credits and 3 AI Insights credits a month; standard support.
Growth$99
per month for 30 Google Workspace mailboxes, billed monthly
Extra mailboxes at $3.25 each; 10 deliverability test credits and 10 AI Insights credits a month; standard support.
Pro$299
per month for 100 Google Workspace mailboxes, billed monthly
Extra mailboxes at $3.00 each; 30 deliverability test credits and 30 AI Insights credits a month; priority support and API access.
Ways to pay less
Maildoso
No public discounts listed.
Zapmail
- Annual discount
Yearly billing, 2 months free
The pricing page's billing switch labels the yearly option as 2 months free and shows quarterly billing as well. Those prices are not shown in the default monthly view.
Common questions
Which is cheaper, Maildoso or Zapmail?
As of Nov 12, 2026, Zapmail is cheaper to start with: $39 a month, against $75 a month for Maildoso. Maildoso starts at $75 per month for 30 mailboxes, and Zapmail starts at $39 per month for 10 Google Workspace mailboxes, billed monthly.
Which has a free plan, Maildoso or Zapmail?
As of Nov 12, 2026, neither Maildoso nor Zapmail has a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.