MillionVerifier vs ZeroBounce vs NeverBounce: email verifiers

Starleads wrote this guide. Starleads sells business contact lists and is not one of the tools compared here. Facts about the tools come from their own websites, checked on 20 October 2026; prices change, so check before you buy.

The quick answer

A bulk email verifier checks every address on a list, without sending a message, and tells you which ones will bounce. On 20 October 2026, checking 1,00,000 addresses cost $135 on DeBounce, $149 on MillionVerifier, $400 on NeverBounce or Bouncer, and $649 on ZeroBounce's pay-as-you-go. All five give free credits to start, and all sort results into much the same groups: valid, invalid, catch-all (or accept-all) and unknown. Verify any B2B list, bought, found or simply old, before you send, and send from an authenticated domain.

Which one to pick

• MillionVerifier: big lists at a low price, with credits that never expire and no charge for risky results.
• ZeroBounce: detailed status codes (spam traps, role-based, abuse), deliverability tools and rupee checkout.
• NeverBounce: integrations and a monthly plan that keeps your CRM's emails clean automatically.
• Bouncer: small packs from 1,000 credits that never expire, plus a deliverability test kit.
• DeBounce: the lowest price of the five for 10,000 and 1,00,000 checks, with taxes included.

Email verifiers compared: price per 10,000 and 1,00,000

Prices are as shown on the tools' own pricing pages on 20 October 2026, in US dollars, for one-off (pay-as-you-go) credits.

At roughly ₹88 to the dollar, 1,00,000 checks come to about ₹11,880 on DeBounce, ₹13,110 on MillionVerifier, ₹35,200 on NeverBounce or Bouncer and ₹57,110 on ZeroBounce. The rupee amounts move with the exchange rate.

What the results mean

Each tool uses its own words, but the groups match:

• Valid (ZeroBounce, NeverBounce), "deliverable" (Bouncer) or "ok" (MillionVerifier): the mailbox exists and accepts mail.
• Invalid or "undeliverable": the address doesn't exist. Delete it.
• Catch-all or "accept-all": the company's server accepts mail for any address, so the tool can't confirm this one. NeverBounce notes that accept-all "is commonly used in small businesses" and that these addresses are often valid.
• Unknown: the server didn't answer in time. Re-check later.
• Role-based addresses such as info@ and sales@: ZeroBounce counts them as valid but files them under "do_not_mail"; DeBounce marks them "Maybe, Not recommended"; Bouncer adds a role flag.
• Disposable, spam trap, abuse: temporary or risky addresses. Delete them.

MillionVerifier pricing and features

MillionVerifier checks single emails, uploaded lists (CSV, TXT or XLSX) and API calls, and its EverClean service verifies new contacts daily inside Mailchimp, HubSpot or ActiveCampaign. It lists 40-plus integrations, including Zoho CRM.

Pricing. 10,000 credits cost $39, 25,000 $59, 50,000 $89, 1,00,000 $149, 5,00,000 $299 and 10,00,000 $449. "Credits never expire", and a free account gets 100 credits without a card. It says "you only pay for good and bad emails and not for risky (unknown and catch-all) emails".

Claims and guarantee. It advertises "99%+ accuracy" and says that if you see a hard bounce rate above 4% after verifying, it refunds your last payment.

Limits. The smallest pack is 10,000. Risky results are left for you to decide, and its own help pages say risky addresses are usable only for real subscribers who signed up in the last two months, "not purchased list, nor collected from the internet". Suits anyone verifying large lists at a low cost per address.

ZeroBounce pricing and features

ZeroBounce offers validation, AI scoring and an email finder, and its ZeroBounce ONE plan adds warm-up, inbox placement tests, blacklist and DMARC monitoring.

Pricing. Pay-as-you-go starts at $39 for 2,000 credits, the minimum; 10,000 cost $129, 50,000 $499, 1,00,000 $649 and 10,00,000 $3,199. ZeroBounce ONE starts at $99 a month for a minimum of 10,000 credits a month, and 1,00,000 a month costs $449 on monthly billing; annual billing saves 20%, and unused subscription credits roll over. Freemium gives 100 free verifications a month if you sign up with a business domain.

Credits. One credit per address; unknown results and duplicates are free. Credits "never expire while you have an active ZeroBounce One subscription"; otherwise "expiration rules may apply". Checkout accepts the Indian rupee. ZeroBounce advertises "99.6% Validation Accuracy Guaranteed".

Limits. Its pay-as-you-go price per address is the highest of the five at 10,000 and 1,00,000, and the Email Finder uses 20 credits per successful search. Suits teams that want detailed result codes and deliverability tools in one account.

NeverBounce pricing and features

NeverBounce verifies lists, single addresses and API calls, fixes common typos ("gmai → gmail") and connects with Zapier, n8n, HubSpot, Mailchimp and other apps.

Pricing. Pay as you go costs $8 for 1,000 credits, $50 for 10,000, $400 for 1,00,000 and $2,500 for 10,00,000, and "Credits expire 12 months after purchase." The Growth plan is $49 a month for up to 10,000 emails ($159 a month for 1,00,000), with CRM auto-sync, AI scoring and free duplicates. Enterprise is custom, "Typically used for 250,000+ emails per month". The pricing page offers "Free list analysis and free test credits".

Results. Valid, Invalid, Disposable, "Accept all (Unverifiable)" and Unknown. For email providers that require a bounce rate below 4%, it advises sending to accept-all addresses "in small segmented batches" and re-verifying unknowns first.

Limits. Pay-as-you-go credits expire after 12 months, and the number of free credits isn't stated. Suits teams whose lists live in a CRM or marketing tool.

Bouncer pricing and features

Bouncer verifies lists and API calls, and sells a Deliverability Kit (inbox placement, blocklist, SPF, DKIM and DMARC tests) from $25 a month and Bouncer Shield for sign-up forms.

Pricing. The minimum purchase is 1,000 credits for $8; 5,000 cost $35, 10,000 $60, 50,000 $250, 1,00,000 $400 and 10,00,000 $2,000. "Email verification credits never expire", there are 100 free credits to start, and it "will never charge for duplicated email addresses within your list, nor for 'unknown' results". A monthly subscription and auto-refill are options.

Results. Deliverable, risky, undeliverable and unknown, with flags for role, free and disposable addresses.

Limits. At 1,00,000 it costs $4.00 per 1,000, more than DeBounce or MillionVerifier. Suits small, occasional checks and senders who want deliverability tests from the same company.

DeBounce pricing and features

DeBounce verifies lists and API calls, removes duplicates at no cost and offers data enrichment and list monitoring.

Pricing. The minimum is 5,000 credits for $15; 10,000 cost $25, 50,000 $75, 1,00,000 $135 and 10,00,000 $750. It includes 100 free credits, credits never expire, the API is included, and "All Prices Include Taxes And Fees."

Credits. One credit per validation; its extra catch-all validation costs 10 credits per address, and enrichment 20 credits per successful detection.

Results. Deliverable, Invalid, Accept-All, Unknown, Disposable, Syntax, Spam Trap and Role.

Limits. The minimum purchase is 5,000, and resolving catch-alls costs ten times a normal check. Suits buyers who want the lowest cost at 10,000 to 1,00,000 addresses.

How to clean a B2B list before you send

1. Tidy the file. One email per row, spaces trimmed, duplicates and rows without an @ removed. Keep the original.
2. Verify. Upload the email column as CSV and download the results with their status column.
3. Delete the bad ones: invalid, disposable, spam trap and abuse addresses.
4. Re-check unknowns a day later, and drop those still unknown.
5. Decide on catch-all and role addresses. For a bought or found list, put catch-alls in a small separate batch or leave them out. Role addresses such as info@ are often the only email a small Indian firm has: write to them one at a time, or call instead.
6. Authenticate your domain with SPF, DKIM and DMARC before the first send; our SPF, DKIM and DMARC guide shows the records.
7. Warm up. Start a new mailbox with a small number of emails a day and raise it slowly. Several cold email tools include warm-up; see our cold email software comparison.
8. Send one-to-one and watch bounces. MillionVerifier's blog puts a good bounce rate under 2%. If bounces climb, stop and re-check the list.
9. Re-verify before reuse. MillionVerifier suggests verifying again if you haven't emailed a list for two months or more.

Verification doesn't change the platform rules. Newsletter tools don't accept bought lists: Mailchimp's Acceptable Use Policy prohibits sending to "purchased, rented, third-party" lists. For a bought B2B list, use one-to-one emails from your own mailbox in small numbers, and phone calls.

How to choose a verifier

• Pack size. For about 1,000 addresses, NeverBounce and Bouncer start at $8. For 10,000 to 1,00,000, DeBounce and MillionVerifier cost least on 20 October 2026.
• Expiry. MillionVerifier, Bouncer and DeBounce credits never expire; NeverBounce's last 12 months; ZeroBounce's depend on a subscription.
• What you pay for. MillionVerifier doesn't charge for unknown or catch-all results; ZeroBounce and Bouncer don't charge for unknowns.
• Currency and tax. All five price in US dollars. ZeroBounce accepts rupees at checkout and DeBounce includes taxes and fees. If you need a GST invoice, ask before paying.
• Detail. If you want spam traps and role addresses flagged separately, compare ZeroBounce's and DeBounce's result codes.

Where a leads database fits

A verifier only cleans addresses you already have; it doesn't give you new buyers to contact. Growth needs a steady supply of new contacts, and that is what a Starleads list gives: every contact we hold for an industry or profession in a city, a state or all of India, in one Excel file, with the share of rows that have an email, a mobile number and a named person shown before you buy, and 60 sample contacts free on every list page. Our CEOs, MDs & Directors list has 36,173 contacts, and 94% of rows have an email address.

• CEOs, MDs & Directors 36,173 contacts · 94% email · 87% mobile ₹1,999
• HR Professionals 18,055 contacts · 89% email · 94% mobile ₹1,999

The routine is short: download the Excel file, keep the name, company, email, mobile and city columns, run the email column through a verifier, delete the invalid rows, save as CSV and import into your email tool or CRM, then assign rows by city to each salesperson. Before promotional calls to the mobile numbers, mark the ones on the DND register (our DND guide explains how). For a mix of industries and cities, use the list builder. City, state and specialisation lists cost ₹499, and All-India lists with 10,000 or more contacts ₹1,999.

What Starleads doesn't do. The data is compiled from business directories and similar sources, so not every row has an email or a named person, and contact details change, which is why verifying is worth doing. There is no look-up of one named executive (our email finder tools guide covers that), no CRM integration or API, payment is by UPI or bank transfer confirmed by hand, and the data covers India only.

What it costs: a worked example

A small team, two telecallers and one person on email, buys the CEOs, MDs & Directors list for India, 36,173 contacts with 94% carrying an email, so fewer than 50,000 addresses to check, at ₹1,999. Verifying up to 50,000 addresses once costs:

• DeBounce: $75, about ₹6,600 (75 × 88), taxes included.
• MillionVerifier: $89, about ₹7,830.
• NeverBounce or Bouncer: $250, about ₹22,000.
• ZeroBounce: $499 for exactly 50,000, about ₹43,910; its calculator prices smaller numbers lower.

The telecallers work the mobile numbers while the emails are being cleaned, and the cleaned file goes into the email tool the next day. The rupee figures for the tools move with the exchange rate.

Our verdict

On price alone, DeBounce and MillionVerifier cost the least at 10,000 and 1,00,000 addresses on 20 October 2026, and MillionVerifier doesn't charge for risky results. ZeroBounce costs more per address but gives detailed result codes (spam trap, abuse and role-based flags among them), deliverability tools and rupee checkout. NeverBounce suits teams that want verification wired into their CRM, and Bouncer suits small, occasional checks with credits that never expire. Whichever you choose, verification only protects your sending; the contacts themselves still have to come from somewhere, and a ready list for your trade and city is the quickest source.

Questions people ask

Is ZeroBounce free, and what does it cost?

Its Freemium plan gives 100 free verifications a month if you sign up with a business domain. Pay-as-you-go starts at $39 for 2,000 credits; 10,000 cost $129 and 1,00,000 $649. The ZeroBounce ONE subscription starts at $99 a month for 10,000 credits.

ZeroBounce vs NeverBounce: which is cheaper?

On pay-as-you-go, NeverBounce: $50 against $129 for 10,000 addresses, and $400 against $649 for 1,00,000. ZeroBounce's subscription brings 10,000 a month down to $99. NeverBounce credits expire after 12 months; ZeroBounce credits don't expire while you hold a subscription.

What is a catch-all email address?

One at a company whose mail server accepts mail for every address, so a verifier can't tell whether that mailbox exists. NeverBounce says these are often valid; send to them in small batches and watch bounces.

Is MillionVerifier accurate?

It advertises "99%+ accuracy" and a refund of your last payment if hard bounces exceed 4% after verification. Those are its own claims; test any verifier on a sample of addresses you know.

Can I verify emails for free?

For a small list, yes: MillionVerifier, Bouncer and DeBounce each give 100 free credits, ZeroBounce 100 a month with a business domain, and NeverBounce free test credits.