Buyer guide · SimpleVerifier Team
Bulk email verifier for CSV lists
A bulk email verifier checks a whole list at once: upload a CSV, and each address gets a syntax check, an MX lookup and an SMTP mailbox probe. SimpleVerifier takes files up to 100,000 rows, returns valid, risky and invalid as separate exports, and costs $39 a month, never cut off: the first 100,000 emails a month run at full speed, then big lists run slower, or $9 a month on Starter for 2,500 emails a month. The first 100 checks are free.
Most bulk verifiers bill per address, so the price of a list depends on its size and on how many times you check it. Ours is a monthly plan with no per-email fees: Pro costs the same for one list of 10,000 as for several adding up to 100,000, and bigger months run slower rather than costing more. For a small list there is Starter at $9 a month, and a metered vendor in the table below can still cost less for a single pass; the table says so. The first 100 checks are free, so you can test the results before choosing.
Lists come from anywhere: a CRM export, a lead database, a form tool. If yours is from a specific platform, the export guides cover where to find the file and how to bring the cleaned version back.
What one bulk list costs, by vendor
| Vendor | 10,000 once | 50,000 once | 100,000 once |
|---|---|---|---|
| SimpleVerifier | $15 | $39 | $39 |
| Bulk Email Checker | $9.95 | $44.95 | $74.95 |
| Emails Checker | $10.50 | $35 | $49.50 |
| Reoon | $11.90 | $58.95 | $116.40 |
| MyEmailVerifier | $12 | $49 | $89 |
| Truelist | $14 | $55 | $90 |
| Listclean | $15 | $35 | $35 |
| Verimail | $15 | $65 | $79 |
| VeriMails | $15 | $39 | $69 |
| Proofy | $15.30 | $44.20 | $75.65 |
| BillionVerify | $16 | $36 | $64 |
| Bouncify | $19 | $78 | $99 |
| DeBounce | $23 | $69 | $124.20 |
| EmailListVerify | $25 | $89 | $168 |
| EmailVerify.io | $25 | $75 | $149 |
| Mailfloss | $29 | $118 | $209 |
| Pabbly Email Verification | $29 | Not published | Not published |
| Bounceless | $29 | $89 | $99 |
| BounceBan | $34 | $149 | $255 |
| MillionVerifier | $39 | $89 | $149 |
| SafetyMails | $39.80 | $125.70 | $194 |
| Clearalist | $40 | $150 | $250 |
| Bouncer | $48 | $200 | $320 |
| NeverBounce | $49 | $99 | $159 |
| Email List Validation | $49 | $158 | $229 |
| Verifalia | $49.90 | $219 | $389 |
| Email Verifier API | $49.95 | $249.95 | $399.95 |
| Emailable | $51 | $208.25 | $357 |
| Clearout | $58 | $290 | $360 |
| MailboxValidator | $59.95 | $139.95 | $199.95 |
| QuickEmailVerification | $60 | $200 | $320 |
| Captain Verify | $63 | $159.30 | $212.40 |
| Kickbox | $70 | $275 | $500 |
| Xverify | $70 | $250 | $400 |
| EmailOversight | $70 | $250 | $400 |
| MailerCheck | $80 | $300 | $500 |
| Scrubby | $80 | $388 | $497 |
| Email Hippo | $88.40 | $312 | $468 |
| ZeroBounce | $99 | $379 | $449 |
| Enrichley | $118 | $298 | $596 |
Each vendor's lowest published route for one list of that size, read from its own pricing page. Our figure is the cheaper of one month of the smallest plan that covers it and a one-time pack, where packs are sold. Where a vendor is below our figure, it costs less for that job. Vendor prices read 12 Oct 2026 to 5 Nov 2026. Each vendor links to its comparison page, which records the date its prices were read. Check their site for current pricing before you buy.
SimpleVerifier facts: prices, packs and limits
- What it is
- Email verification with a real SMTP mailbox check: each address comes back valid, risky or invalid with a reason. Includes an email finder on Pro and up.
- Price per check
- Starter $9/mo for 2,500 ($3.60 per 1,000); Pro $39/mo, 100,000 a month at full speed ($0.39 per 1,000 when used), then slower, never cut off. Business $99/mo with 300,000 at full speed; Agency $249/mo with 750,000 at full speed.
- One-time packs
- 10,000 for $15 ($1.50 per 1,000); 25,000 for $29 ($1.16 per 1,000); 50,000 for $49 ($0.98 per 1,000); 100,000 for $79 ($0.79 per 1,000); 250,000 for $169 ($0.68 per 1,000). Credits never expire, run at standard speed, CSV verification only (no API or finder).
- Free checks
- First 100 email checks free with a Google sign-in, no card, once per account. Single checks on the free email checker need no account.
- Billing
- Monthly subscription, cancel anytime (yearly billing optional). One-time packs are listed above. Starter allowances reset monthly and do not roll over.
- Speed today
- One sending IP today, shared by every customer: about 13,000 mailbox checks a day in the standard lane. Bad syntax, dead domains and disposable addresses return at once; a list of 100,000 takes days, not hours, and each job shows its estimated finish time.
- Catch-all handling
- Catch-all (accept-all) addresses stay risky, never valid, and are graded higher, medium or lower likelihood with the reasons. Anything a mail server does not confirm is risky.
- API and MCP
- REST API on Pro, Business and Agency (Pro includes 10,000 calls a month, then $1.50 per 1,000). Remote MCP server with 6 tools for Claude, ChatGPT, Cursor and VS Code. No API on Starter.
- Integrations
- Connects to Instantly, Smartlead, HubSpot and Mailchimp by API key: verifies a campaign or list and tags each contact with its result. CSV in and out for any other tool.
- Phone
- Free phone format checks (country, type range). Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month). It never says a number is in service.
- What it does not do
- No sending, warmup or inbox placement tests. No published accuracy benchmark against other verifiers. Catch-all domains, Yahoo and AOL cannot be confirmed, and Outlook.com and Hotmail mailboxes are not probed while Microsoft refuses checks from our server's network: all of these come back risky, never valid.
SimpleVerifier facts from our pricing page and product. Last updated .
Test it on a real address first
Type any address. It gets the same check the paid plans run: syntax, the domain’s mail servers and, where the provider allows it, a live mailbox check. Nothing is sent to the address.
Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Have a list? Sign in with Google and the first 100 addresses are checked free, with results to download. No card.
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What happens to each address
Every row is normalised, de-duplicated and checked for syntax first. Then the domain's MX records are looked up, and the recipient's mail server is asked whether the specific mailbox exists, without sending an email. 9,913 disposable domains are flagged, as are role addresses such as info@ and sales@.
Anything the mailbox probe could not confirm, including addresses at catch-all domains that accept every recipient, is returned as risky rather than valid. That keeps the valid file honest: it contains addresses a server actually confirmed.
How long a bulk list takes
Mailbox checks are paced, because mail servers slow down or block verifiers that probe too fast, and the daily check capacity is shared between customers. Addresses that need no mailbox check, such as broken syntax, dead domains and disposable addresses, come back at once. The rest run in a queue, and the job card shows an estimated finish time. You can close the tab: the results wait in your history.
A list of 10,000 can take from a few hours to a day or more, depending on the queue. A list of 100,000 takes days rather than hours. We pace on purpose: a rushed probe returns more unknowns, so the trade is time for fewer addresses left unresolved.
Common questions
- How many emails can I verify in bulk at once?
- One CSV can hold up to 100,000 rows. Split a larger list into several files; Pro is never cut off: the first 100,000 emails a month run at full speed, then big lists run slower, so the number of files does not change the price.
- What does bulk email verification cost?
- Pro is $39 a month, never cut off: the first 100,000 emails a month run at full speed, then big lists run slower. Starter is $9 a month for 2,500 emails a month; unused emails don't roll over. Metered vendors charge per address; the table on this page compares them at three list sizes.
- Does bulk verification send an email to each address?
- No. The check talks to the recipient's mail server and stops before any message is sent, so nobody on your list receives anything.
- What file formats can I upload?
- CSV files exported from spreadsheets, CRMs and email platforms. The export guides cover the column names each platform uses and how to import the cleaned file back.
Verify your list in bulk
Pro is $39 a month and never cuts you off: the first 100,000 emails a month run at full speed, then big lists run slower. CSV uploads, the API (10,000 calls a month, then $1.50 per 1,000), the Google Sheets add-on and the email finder are included, and you can cancel any time. For smaller volumes, Starter is $9 a month for 2,500 emails a month.
The first 100 email checks are free with a Google sign-in, no card, on the same engine the paid plans use.