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Buyer guide · SimpleVerifier Team

What it costs to verify 50,000 emails

Verifying a list of 50,000 email addresses on SimpleVerifier costs $39: one month of Pro. A list of 50,000 takes days rather than hours. Other vendors' prices for the same list, read from their own pricing pages, are in the table below, including the ones that cost less.

or test one address on this page

Price a 50k list on two things: what one pass costs, and what it costs if you verify it again next month. A credit pack is often the lower price for a single pass; a flat plan is usually lower once the list is checked repeatedly. The second table on the page answers the repeated case.

For a different size, the verification cost calculator prices any volume across the same vendors.

One list of 50,000, by vendor

Lowest published route for one list of 50,000, read from each vendor's pricing page. Where a vendor is below our figure, it costs less for this 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.

By continuing you agree to our Terms and Privacy Policy.

How long it 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. A list of 50,000 takes days rather than hours. You can close the tab; the results wait in your history.

A CSV can hold up to 100,000 rows, so a 50k list is one upload.

If you will verify it again

Lists that are still being used decay and are worth re-checking before each large send. On Pro that costs nothing extra. The monthly figures for each vendor are on the unlimited verification page.

Common questions

How much does it cost to verify 50,000 emails?
$39 on SimpleVerifier (one month of Pro). Other vendors' published prices for 50,000 addresses are in the table on this page.
How long does it take to verify 50,000 emails?
A list of 50,000 takes days rather than hours. Checks are paced and the daily capacity is shared, and the job card shows the list's estimated finish time.
Is it cheaper to verify 50,000 emails with a credit pack or a subscription?
For one pass, compare the packs in the table. For a list you verify every month, a flat monthly plan usually costs less, because a credit pack is bought again for every pass.

Verify your 50k list

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.

See plans and pricing

Clean your next list before it bounces

100 free email checks when you sign in with Google, no card. Then monthly plans from $9, or one flat price with fair use, never cut off.

100 free checks, no card Cancel anytime Secure payment by Stripe