Emailable vs MailTester.ninja (2026): which should you pick?

Pick Emailable if

• Fits if you want list checks and placement reports on one credit balance
• Works for adding a check to sign-up forms without writing code

Look elsewhere if

• Tight if you only need a few hundred checks, as the smallest pack is 5,000 credits for $38
• Pricey if you run lots of placement tests, at 100 credits a report
• Not for you if you need warm-up or DMARC management, as the reports only point out authentication errors
• Watch out: more than 1 million credits means a price from sales

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

Emailable

• The smallest purchase is 5,000 credits, more than some rivals' entry packs.
• Inbox reports cost 100 credits each, so placement testing uses up a balance fast.
• There are no warm-up or DMARC management tools; reports only point out authentication errors.

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.

Emailable

Bulk verification

Upload a list and get each address checked; the vendor says 10,000 addresses usually finish in under 3 minutes. Duplicates and unknown results are refunded.

API and widget

Verify addresses from your own code, or add a widget that checks them as they are typed into a form, at one credit each.

Inbox reports

Add Emailable's seed list to a send to get a report on inbox placement, spam score, authentication errors and broken links, for 100 credits each.

Blacklist monitoring

Watches your IPs and domains on more than 120 real-time blacklists and emails you when one is listed, at 5 credits per check.

Integrations

Direct connections to email, CRM and form tools such as Mailchimp, HubSpot, Klaviyo and Pipedrive, plus more through Make and Zapier.

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.

Emailable

• Pay-As-You-Go$38

  one-time for 5,000 credits

  The minimum purchase; credits never expire. Bulk rates: $60 for 10,000, $420 for 100,000 and $2,100 for 1 million.

• Monthly$32.30

  per month for 5,000 credits

  A credits subscription at 15% below pay-as-you-go at every volume; unused credits roll over and it can be cancelled anytime.

• EnterpriseCustom

  More than 1 million credits, priced by sales.

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.

Emailable

• Other savings

  Save 15% with a credits subscription

  A monthly credits subscription costs 15% less than buying the same credits pay-as-you-go: 5,000 credits are $32.30 a month against $38.

MailTester.ninja

No public discounts listed.