Catch-all email verification

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 October 31, 2026.

How SimpleVerifier grades a catch-all address

Higher likelihood: the address uses the same name format as addresses already confirmed on that domain (for example first.last next to a confirmed first.last), or the format most of the list uses for that domain.

Medium: weaker or mixed evidence, such as a single-word name (anna@) next to confirmed single-word addresses, or no evidence either way. Lower: one of several spellings of the same name on that domain (anna.lee, a.lee, alee), a format that differs from the domain's confirmed one, or test@ and noreply@, which nobody reads.

Each row comes back with the grade, plain-sentence reasons and stable signal codes, in the CSV, the API and the MCP server. The status stays risky and every reason list ends with "Still unconfirmed". The grade opens no extra mail connection.

The mail host, SPF and DMARC records and server response timing say nothing about whether one particular mailbox exists, so they do not move the grade. The catch-all scoring page has the method.

What a catch-all result costs

On Starter ($9, 2,500 emails a month) a catch-all row counts as one check, because it is checked and graded. Addresses we can't check and duplicates don't count. Pro, Business and Agency have no per-email charge: Pro is $39 a month, never cut off: the first 100,000 emails a month run at full speed, then big lists run slower.

How other vendors bill catch-all results, from their own pages: ZeroBounce, read 30 Oct 2026: Charged as a normal credit. The FAQ lists only unknown results and duplicate removal as the cases it does not charge, and catch-all is not on that list. NeverBounce, read 30 Oct 2026: Not stated on the pages we read. Hunter.io, read 30 Oct 2026: Not stated on the pages we read. A verification costs 0.5 credits. Clearout, read 30 Oct 2026: Charged. Its FAQ: "Any valid, invalid or catch-all email address is considered as a billable email." Kickbox, read 30 Oct 2026: Not stated. Its docs class Accept All as Risky but say nothing about billing. Bouncer, read 30 Oct 2026: Not stated. Its FAQ classes accept-all addresses as Risky but says nothing about whether they cost a credit. DeBounce, read 30 Oct 2026: A standard check costs one credit whatever the result. An optional catch-all re-check is sold separately at 10 credits per address. EmailListVerify, read 30 Oct 2026: Not stated. The page lists catch-all domain detection but not how a catch-all result is billed. Emailable, read 30 Oct 2026: Not stated on the pages we read. MillionVerifier, read 30 Oct 2026: Credits come back on the same goodwill rule as unknown results, and its homepage says catch-all verification is included at no extra cost. Reoon, read 30 Oct 2026: Charged. Its FAQ counts a catch-all result as a successful verification, which costs one credit (anything except unknown). Verifalia, read 2 Nov 2026: Not stated on the pricing page. What it does say is that every verification costs 1 credit at Standard quality, 2 at High and 4 at Extreme. Truelist, read 2 Nov 2026: Resolved where it can: enhanced validation runs only where the standard check returns unknown and costs 3 credits per resolved address. SimpleVerifier grades catch-all rows by likelihood and does not resolve them. Proofy, read 3 Nov 2026: Not stated. The page lists accept-all detection among the checks but not how an accept-all result is billed. BounceBan, read 3 Nov 2026: Verified, not skipped: catch-all addresses are what it is built for, at the same 1 credit per successful verification. Scrubby, read 3 Nov 2026: Resolved and charged: Quick Verification costs 1 credit per email, including catch-all domains, and Deep Verification costs 3. Bounceless, read 4 Nov 2026: Included: eligible catch-all addresses get a separate second pass inside the 1-credit standard price, with no extra charge. Bulk Email Checker, read 4 Nov 2026: Not stated on the pricing page. Captain Verify, read 4 Nov 2026: Not stated. Its FAQ lists only unknown verifications and duplicates as uncounted. Listclean, read 4 Nov 2026: Not stated. Its FAQ lists catch-all detection among the checks on every pack but not how a catch-all result is billed. MyEmailVerifier, read 5 Nov 2026: Not stated on the pricing page. It sells a separate Deep Catch-All Check, whose price the pricing page does not show. EmailVerify.io, read 5 Nov 2026: Not stated on the pricing page. Verimail, read 5 Nov 2026: Not stated directly. Its FAQ counts an address that came back deliverable, undeliverable or risky as a verification. Clearalist, read 5 Nov 2026: Not stated on the pricing page. EmailOversight, read 5 Nov 2026: Not stated on the pricing page. SafetyMails, read 5 Nov 2026: Not stated on the pricing page. BillionVerify, read 5 Nov 2026: Charged: its FAQ says valid, invalid, catch-all, disposable and role results use one credit each. Emails Checker, read 5 Nov 2026: Not stated on the pricing page. Email Verifier API, read 5 Nov 2026: Not charged: it bills only definitive Passed and Failed results. VeriMails, read 5 Nov 2026: Not stated on the pricing page; catch-all detection is listed on every plan. Selzy, read 5 Nov 2026: Not stated on the pricing page.

How to send to catch-all addresses

Keep them out of the main campaign. Send higher-likelihood rows first, in small batches, and watch hard bounces; drop lower-likelihood rows, most of which are guessed spellings. The list download can return confirmed rows only, confirmed plus higher-likelihood catch-alls, or confirmed plus every catch-all except lower.

Through the API, the same grade comes back in catch_all_confidence with catch_all_reasons and catch_all_signals, on the same call as the mailbox check. See the API reference.

When another verifier is the better pick for catch-alls

• You want a vendor that turns part of your catch-alls into a definite valid or invalid. MillionVerifier says it resolves part of them with a proprietary method; we do not, because the server's answer cannot confirm them.
• You want catch-all credits handed back. MillionVerifier's help center says it adds back credits used on unknown and catch-all results; on our flat plans there is nothing to hand back.
• You want a numeric score on every result. ZeroBounce sells AI scoring credits and Reoon returns a 0 to 100 score; ours is a three-level grade with written reasons.

Common questions

Can a catch-all email address be verified?

Not by asking the mail server, because it accepts every address. A verifier can detect that the domain is catch-all and weigh other evidence. SimpleVerifier keeps these rows risky and grades them higher, medium or lower likelihood with the reasons.

Should I send to catch-all emails?

Not mixed into the main send. Send higher-likelihood rows in small batches, watch bounces, and drop lower-likelihood rows.

Do email verifiers charge for catch-all results?

Most count them as a normal check. ZeroBounce, read 30 Oct 2026: Charged as a normal credit. The FAQ lists only unknown results and duplicate removal as the cases it does not charge, and catch-all is not on that list. NeverBounce, read 30 Oct 2026: Not stated on the pages we read. Hunter.io, read 30 Oct 2026: Not stated on the pages we read. A verification costs 0.5 credits. Clearout, read 30 Oct 2026: Charged. Its FAQ: "Any valid, invalid or catch-all email address is considered as a billable email." Kickbox, read 30 Oct 2026: Not stated. Its docs class Accept All as Risky but say nothing about billing. Bouncer, read 30 Oct 2026: Not stated. Its FAQ classes accept-all addresses as Risky but says nothing about whether they cost a credit. DeBounce, read 30 Oct 2026: A standard check costs one credit whatever the result. An optional catch-all re-check is sold separately at 10 credits per address. EmailListVerify, read 30 Oct 2026: Not stated. The page lists catch-all domain detection but not how a catch-all result is billed. Emailable, read 30 Oct 2026: Not stated on the pages we read. MillionVerifier, read 30 Oct 2026: Credits come back on the same goodwill rule as unknown results, and its homepage says catch-all verification is included at no extra cost. Reoon, read 30 Oct 2026: Charged. Its FAQ counts a catch-all result as a successful verification, which costs one credit (anything except unknown). Verifalia, read 2 Nov 2026: Not stated on the pricing page. What it does say is that every verification costs 1 credit at Standard quality, 2 at High and 4 at Extreme. Truelist, read 2 Nov 2026: Resolved where it can: enhanced validation runs only where the standard check returns unknown and costs 3 credits per resolved address. SimpleVerifier grades catch-all rows by likelihood and does not resolve them. Proofy, read 3 Nov 2026: Not stated. The page lists accept-all detection among the checks but not how an accept-all result is billed. BounceBan, read 3 Nov 2026: Verified, not skipped: catch-all addresses are what it is built for, at the same 1 credit per successful verification. Scrubby, read 3 Nov 2026: Resolved and charged: Quick Verification costs 1 credit per email, including catch-all domains, and Deep Verification costs 3. Bounceless, read 4 Nov 2026: Included: eligible catch-all addresses get a separate second pass inside the 1-credit standard price, with no extra charge. Bulk Email Checker, read 4 Nov 2026: Not stated on the pricing page. Captain Verify, read 4 Nov 2026: Not stated. Its FAQ lists only unknown verifications and duplicates as uncounted. Listclean, read 4 Nov 2026: Not stated. Its FAQ lists catch-all detection among the checks on every pack but not how a catch-all result is billed. MyEmailVerifier, read 5 Nov 2026: Not stated on the pricing page. It sells a separate Deep Catch-All Check, whose price the pricing page does not show. EmailVerify.io, read 5 Nov 2026: Not stated on the pricing page. Verimail, read 5 Nov 2026: Not stated directly. Its FAQ counts an address that came back deliverable, undeliverable or risky as a verification. Clearalist, read 5 Nov 2026: Not stated on the pricing page. EmailOversight, read 5 Nov 2026: Not stated on the pricing page. SafetyMails, read 5 Nov 2026: Not stated on the pricing page. BillionVerify, read 5 Nov 2026: Charged: its FAQ says valid, invalid, catch-all, disposable and role results use one credit each. Emails Checker, read 5 Nov 2026: Not stated on the pricing page. Email Verifier API, read 5 Nov 2026: Not charged: it bills only definitive Passed and Failed results. VeriMails, read 5 Nov 2026: Not stated on the pricing page; catch-all detection is listed on every plan. Selzy, read 5 Nov 2026: Not stated on the pricing page. On SimpleVerifier Starter a catch-all counts as one check; Pro and up have no per-email charge.

Why does SimpleVerifier never mark a catch-all address valid?

Because the server's yes means nothing on a catch-all domain. Marking it valid would hide the risk from you; the grade tells you how likely it is instead.