MailTester.ninja vs MillionVerifier (2026): which should you pick?
As of Nov 13, 2026, MillionVerifier grades higher than MailTester.ninja: 2.4 against 2.2 out of 4.0.
Checked Oct 18, 2026 and Nov 13, 2026 · graded Oct 18, 2026 and Nov 13, 2026 by ToolGPA
MillionVerifier grades higher on ease of use. They get the same grade on value for money, the free plan, features and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
MailTester.ninja
Real-time email verifier and finder with a REST API
MillionVerifier
Low-cost bulk email verification with credits that never expire
Which one is for you
Pick MailTester.ninja if
- Fits if you want a steady stream of live checks from an API
- Works for people who check a few addresses by hand on the free site
Look elsewhere if
- Tight if you work in bursts, as requests over the daily limit are refused until the next day
- Skip it if you want credits that carry over, since plans are priced by daily limit
- Watch out: Starter is billed weekly, and the monthly plans are Pro and Ultimate
- Watch out: free API calls are 10 or 50 a day, one every 30 seconds
- Watch out: a catch-all domain's accepted address is not proof the mailbox exists
Pick MillionVerifier if
- Fits if you clean hundreds of thousands of addresses at once, at $449 a million
- Works for cleaning now and then, as the credits never expire
Look elsewhere if
- Tight if you need fewer than 10,000 checks, the smallest regular pack
- Not for you if you want EverClean's price up front, as it isn't published and it works only through integrations
- Skip it if you need warm-up, inbox placement tests or DMARC tools as well
- Watch out: there's no monthly credit plan, only an auto top-up that buys a new pack when the balance runs low
How we grade them
| 2.2GPAMailTester.ninjaFair | 2.4GPAMillionVerifierFair | |
|---|---|---|
| Value for money | CPro is $23.99 a month, and the weekly Starter is $6.99, about $30 a month. The category's middle is $23. | C$39 for a one-off 10,000, and credits never expire. Among its listed rivals DeBounce ($25) and Clearout ($32 a month billed yearly) cost less at that size. At a million checks it's $449, where Bouncer charges $2,000. |
| Free plan and trial | COne-off checks on the site are free with no signup. The free API allows 10 checks a day, or 50 with a 7-day token, one request every 30 seconds. | CNo free plan, but 100 free credits with no card, and the help centre lists 500 for business-email sign-ups. Enough to test, not to clean a list. |
| Features | CLive mailbox check, verdict codes, finder and tools. An accepted address on a catch-all domain cannot be confirmed to exist. | CIt does the checking job fully: files, imports from email platforms, an API, refunds on unsure results and EverClean's daily rechecks. That's a smaller job, though: no warm-up, placement tests or DMARC, and EverClean's price isn't published. |
| Ease of use | CNo rating on record. Paste an address or call the API; the daily-limit model needs some thought. | BNo App Store rating on record, but nothing to set up: upload a CSV, TXT or XLSX file, or import from your email platform, and download it sorted into good, risky and bad. |
| Platforms and integrations | BWeb only, but with a REST API, SDKs, an MCP server and a list of integrations. | BWeb and a REST API, with more than 40 connections including Mailchimp, HubSpot, ActiveCampaign, SendGrid, Mailgun, Zoho CRM and Pipedrive, plus an n8n node. No phone or desktop app. |
| Best for | checking addresses through a daily-limit API | cleaning lists of hundreds of thousands |
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: MailTester.ninja and MillionVerifier. How we grade
Where they differ
At a glance
| MailTester.ninja | MillionVerifier | |
|---|---|---|
| Pricing | Free plan | Free trial |
| Starts at | $6.99 per week for up to 100,000 checks a day; $23.99 per month for the same limit | $39 one-time for 10,000 credits |
| Free plan | One-off checks on the website are free with no signup. The API allows 10 checks a day with key=free, or 50 a day with a free token valid for 7 days. | None |
| Free trial | None listed | 100 free credits with no card; the help center lists 500 for business-email sign-ups |
| Web | ||
| Made by | Unlimited & Limited | GBD Software as a Service Private Limited Company |
| Price read from | mailtester.ninja | millionverifier.com |
| Checked | Nov 13, 2026 | Oct 18, 2026 |
Worth knowing
MailTester.ninja
- Free API calls are limited to one request every 30 seconds, and 10 or 50 checks a day.
- Plans are priced by a daily limit, not a credit balance: requests above it are refused until the next day.
- Starter is billed weekly; the monthly plans are Pro and Ultimate.
- An accepted address on a catch-all domain cannot be confirmed to exist.
MillionVerifier
- There is no monthly credit plan; auto top-up buys a new pack when the balance runs low.
- EverClean has its own monthly fee based on list size, which the site does not publish, and works only through integrations.
- Verification only: no warm-up, inbox placement tests or DMARC tools.
- The smallest regular pack is 10,000 credits; a 2,000-credit pack for $4.90 is a one-time trial option.
Key features
MailTester.ninja
- Live mailbox check
- Each address is tested against the recipient's mail server (syntax, DNS, MX and an SMTP handshake). No message is sent, and the page says no copy of the address is kept.
- Verdict codes
- Results are ok, ko (invalid) or mb (unverifiable), with messages such as Catch-All, Disposable, Greylisted, Timeout and No MX.
- Email finder
- Tries common address formats such as first.last and flast for a name and company domain, and returns the first the server accepts. The Finder API needs a paid key.
- REST API, SDKs and MCP server
- Two endpoints, an OpenAPI 3.1 spec, JavaScript and Python SDKs and an MCP server for AI agents.
- Deliverability tools
- The site also offers a domain audit report, a sender score test for a sent email and a blocklist checker.
MillionVerifier
- Bulk list verification
- Upload a CSV, TXT or XLSX file, or import a list from a connected email platform, and download it sorted into good, risky and bad addresses.
- Risky email refund
- Credits spent on addresses it cannot verify for certain, such as unknown and catch-all results, are returned.
- Real-time API
- A REST API checks addresses at the sign-up form and can flag disposable and role-based addresses.
- EverClean
- Rechecks the lists in a connected Mailchimp, HubSpot, ActiveCampaign or other account every day and can unsubscribe bad addresses automatically.
- Integrations
- More than 40 connections to email and CRM tools, plus an n8n node for automated workflows.
Plans
MailTester.ninja
Starter$6.99
per week, billed weekly
Up to 100,000 verifications and 100,000 API calls a day. Cancel any time.
Pro$23.99
per month, billed monthly
Up to 100,000 verifications and 100,000 API calls a day.
Ultimate$39.99
per month, billed monthly
Up to 200,000 verifications and 200,000 API calls a day. A quantity above 1 multiplies the limit, so 5 gives 1 million a day.
MillionVerifier
Pay as you go$39
one-time for 10,000 credits
Credits never expire. Larger packs: $89 for 50,000, $149 for 100,000, $449 for 1 million and $2,599 for 10 million.
Volume pricingCustom
Custom prices for more than 50 million credits.
Ways to pay less
MailTester.ninja
No public discounts listed.
MillionVerifier
- Other savings
10% extra credits with auto top-up
Accounts with auto top-up switched on get 10% extra credits on every payment, manual or automatic.
- Other savings
1 million free credits per 5 million bought
For every 5 million credits purchased, counting past purchases, MillionVerifier adds 1 million credits free.
Common questions
Which is cheaper, MailTester.ninja or MillionVerifier?
As of Nov 13, 2026, MailTester.ninja starts at $6.99 per week for up to 100,000 checks a day; $23.99 per month for the same limit, and MillionVerifier starts at $39 one-time for 10,000 credits.
Which has a free plan, MailTester.ninja or MillionVerifier?
As of Nov 13, 2026, only MailTester.ninja has a free plan. MillionVerifier does not, though it has a free trial.
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.