Best email verifier for large lists: price to verify 1,000,000 emails once

Which one should you pick?

• Pick SimpleVerifier if you verify or re-check lists every month and want one flat monthly price instead of credits, with catch-all addresses kept risky rather than marked valid.

  Skip SimpleVerifier if you want the lowest price for one small list, where another vendor's pack can cost less (cost by list size); you need your data processed only inside the EU (our service providers process data in several countries, including the US); or your list is mostly Outlook.com, Hotmail or Live addresses, which Microsoft currently won't let us confirm, so they come back risky (why).

• Pick Listclean if you clean a list of up to about 100,000 once or a few times a year and want credits that never expire.

• Pick Emails Checker if you clean a list once or a few times a year and want credits that never expire.

• Pick BillionVerify if you verify under about 50,000 addresses a month, clean a list once, or want to resell verification under your own brand.

• Pick MyEmailVerifier if you verify under about 25,000 addresses a month, want credits that never expire, or want to pay with PayPal or crypto.

• Pick Verimail if you verify up to about 10,000 addresses a month, or clean a list now and then and want credits that never expire.

• Pick VeriMails if you verify up to about 50,000 addresses a month: its plans are $15 for 10,000 and $39 for 50,000, and prepaid credits never expire.

• Pick Proofy if you clean a list of up to about 25,000 once or a few times a year and want credits that never expire.

• Pick Bulk Email Checker if you clean a list of up to about 25,000 once or a few times a year and want credits that never expire.

• Pick MillionVerifier if you clean one very large list now and then and don't re-check it often.

How we compared

We priced one clean of 1,000,000 addresses on the email verifiers we hold dated prices for, from our dated vendor data, and list each vendor's pricing page under its row. The table shows SimpleVerifier and the 9 lowest-priced of the vendors priced at this size; vendors with no published price at this size are left out. We did not run an accuracy benchmark, so nothing here ranks accuracy: test a shortlist on a sample of your own list, including addresses you know are dead.

Each tool in a few lines

1. 1. SimpleVerifier(our tool)

   Best for: Big lists you can wait on: a flat monthly price instead of per-address credits

   • Catch-all addresses come back risky, never guessed valid
   • Connects to Instantly, Smartlead, HubSpot and Mailchimp by API key
   • Watch out: The free allowance is a one-time 100 checks, not a monthly refill
   • Watch out: Starter has no API and its allowance does not roll over; 10,000 a month needs Pro

   Checked November 10, 2026: SimpleVerifier pricing · SimpleVerifier verify

2. 2. Listclean

   Best for: Buyers who clean a list once or now and then: its packs are $15 for 25,000 and $35 for 100,000, credits never expire, and unknown and duplicate results are not charged

   • One-off cleans cost less: 25,000 credits are $15 and 100,000 are $35, under a month of Pro.
   • Its FAQ says credits never expire, and unknown and duplicate results are not charged.
   • Watch out: Every pass is another pack, so a list you re-check every month is paid for again each time, and from 250,000 addresses ($65) one pass costs more than a month of Pro.

   Checked November 4, 2026: Listclean pricing and FAQ

3. 3. Emails Checker

   Best for: Buyers who clean a list once or now and then: its packs are $21 for 25,000 and $49.50 for 100,000 with taxes included, and credits never expire

   • One-off cleans cost less: 25,000 credits are $21 and 100,000 are $49.50, with taxes included.
   • Its pricing page says credits never expire and there is no subscription.
   • Watch out: Every pass is another pack, so a list of 100,000 re-checked every month is $49.50 every month, more than a month of Pro.

   Checked November 5, 2026: Emails Checker pricing and FAQ

4. 4. BillionVerify

   Best for: Buyers who verify under about 50,000 addresses a month, or clean a list once: plans are $16 a month for 20,000 and $36 for 50,000, a 100,000 pack is $80, paid credits never expire, and unknown results are free

   • Its plans cost less than ours up to 50,000 a month: $16 a month for 20,000 and $36 for 50,000, and a one-time 100,000 pack is $80.
   • A logged-in account gets 20 free credits every day, up to 600 a month, against our first 100 free checks.
   • Watch out: The allowance is a credit count, so a list re-checked every month spends credits again each time, and at 100,000 a month its plan is $64.

   Checked November 5, 2026: BillionVerify pricing and FAQ

5. 5. MyEmailVerifier

   Best for: Small monthly volumes at a low per-address price

   • Small monthly volumes cost less: its plans are $7 for 5,000, $12 for 10,000 and $25 for 25,000 a month, plus 5% bonus credits.
   • A verified account gets 100 free credits every day, against our first 100 free checks.
   • Watch out: The allowance is a credit count, so 100,000 a month is $89 on a plan or $99 as a pack, and its FAQ says it never stores a result, so every re-check of the same list spends credits again.

   Checked November 5, 2026: MyEmailVerifier pricing and FAQ

6. 6. Verimail

   Best for: Up to about 10,000 a month

   • Its Starter plan is $15 a month for 10,000 credits, and packs start at $4 for 1,000.
   • Its pricing page says unknowns, duplicates and syntax errors are never charged, and pack credits never expire.
   • Watch out: It has no plan between 10,000 and 100,000 a month, so 25,000 a month is a $40 pack or the $79 Professional plan, and 1,000,000 a month is $299.

   Checked November 5, 2026: Verimail pricing and FAQ

7. 7. VeriMails

   Best for: Buyers who verify up to about 50,000 addresses a month: its plans are $15 a month for 10,000 and $39 for 50,000, and prepaid credits never expire

   • Its Starter plan is $15 a month for 10,000 verifications, or $150 a year, under a month of Pro for lists that size.
   • Its FAQ says prepaid credits never expire.
   • Watch out: Plan allowances reset each billing cycle and do not roll over, and 100,000 a month is $69 on its Business plan or $99 as a pack.

   Checked November 5, 2026: VeriMails pricing and FAQ

8. 8. Proofy

   Best for: Buyers who clean a list of up to about 25,000 once or now and then: its packs are $18 for 10,000 and $32 for 25,000, credits never expire, and unknowns and duplicates are not charged

   • Small and mid-size one-off cleans cost less: 10,000 credits are $18 and 25,000 are $32, and its page says credits never expire, on packs and monthly plans alike.
   • Its pricing page says duplicates and Unknown results are not charged.
   • Watch out: Every pass is another credit purchase, so a list you re-check every month is paid for again each time, and from 50,000 a month its monthly plan ($44.20) costs more than a month of Pro.

   Checked November 3, 2026: Proofy pricing and FAQ · Proofy free email checker

9. 9. Bulk Email Checker

   Best for: Buyers who clean a list once or a few times a year: 10,000 credits are $9.95 and 25,000 are $23.95, credits never expire, and there is no monthly fee

   • One-off cleans cost less: 10,000 credits are $9.95 and 25,000 are $23.95, with no monthly fee.
   • Its pricing page says credits never expire and stay valid for as long as the account is active.
   • Watch out: Every pass is another credit purchase, so a list re-checked every month is paid for again each time, and from 50,000 credits ($44.95) one pass costs more than a month of Pro.

   Checked November 4, 2026: Bulk Email Checker pricing and FAQ

10. 10. MillionVerifier

    Best for: Very large one-off cleans

    • For a single very large clean its published packs are low per address: 1,000,000 credits for $449 and 10,000,000 for $2,599.
    • Credits never expire, so a pack bought for one clean covers later ones too.
    • Watch out: Every pass is a fresh purchase, so a list you re-check monthly is bought again each time.

    Checked November 2, 2026: MillionVerifier pricing

Common questions

How long does a million-address list take?

On SimpleVerifier, the first 300,000 checks a month at full speed, then slower, never cut off on Business, and the rest runs slower, never cut off. Your plan decides the pace; see how long bulk verification takes.

Which vendors do not publish a price at 1,000,000?

Vendors whose pages end below a million or say contact sales are left out of the table, because we do not extrapolate a price from the nearest tier.

Which route is cheapest for me?

It depends on volume and how often you repeat it. At one clean of 1,000,000 addresses the lowest published routes are Listclean ($175), Emails Checker ($275) and BillionVerify ($280); see cost by list size to price another volume. SimpleVerifier Pro is $39 a month with the first 100,000 checks a month at full speed, then slower, never cut off.

Is the cheapest verifier the most accurate?

We did not run an accuracy benchmark, so nothing here ranks accuracy: test a shortlist on a sample of your own list, including addresses you know are dead.