Mailfloss vs MillionVerifier (2026): which should you pick?

Pick Mailfloss if

• Fits if your list lives in Mailchimp, Klaviyo or another platform it plugs into
• Works for lists that need cleaning every day without uploads

Look elsewhere if

• Tight if you stay free, as 500 verifications a month runs out fast
• Not for you if your platform isn't supported, because you'd use prepaid credits instead
• Watch out: the 7-day trial needs a credit card and the plan starts on day 8
• Pricey if you want more platforms, as Lite connects one and Business ten

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

Mailfloss

• Subscription plans need a supported email platform; others must use prepaid credits.
• A credit card is required for the 7-day trial, and the plan starts on day 8.
• Prices on the page are read as monthly; the page offers an annual option that saves 17%.
• Only the entry credit step of each plan shows a price in the page text read here.

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.

Mailfloss

Typo Fixer

Recognizes more than 250 typo patterns in email domains and corrects the address in place instead of deleting the subscriber.

Signup verification

Instafloss checks each new signup as it arrives and screens out fake, disposable, role-based and dead addresses.

Daily list cleaning

Autofloss scans new subscribers every day and removes those that fail validation, with custom keep and remove rules.

Decay protection

Re-checks older subscribers on a schedule, since addresses on a list go bad over time.

Prepaid credits

For lists outside a supported platform, credits are bought once, never expire, and are used by uploading a file.

API and Zapier

Every subscription plan lists a real-time API, webhooks and a Zapier integration.

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.

Mailfloss

• Lite$29

  per month for 10,000 credits, billed monthly

  Connects 1 email platform. Credits step up to 510,000 a month at a higher price; higher steps are not priced on the page.

• Business$59

  per month for 25,000 credits, billed monthly

  Connects 10 email platforms. Credit steps run up to 525,000 a month at higher prices.

• Pro$209

  per month for 125,000 credits, billed monthly

  Unlimited email platforms, priority human support and single sign-on. Credit steps run up to 625,000 a month.

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.

Mailfloss

• Annual discount

  Save 17% with annual billing

  The pricing page has a Monthly/Annual toggle labeled Save 17%. The annual prices were not readable in the page text.

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.