MailboxValidator alternative
MailboxValidator costs $29.95 a month for 3,000 credits, or pay as you go from $19.95 per 1,000 on a 1,000 pack, falling to $0.70 at 1,000,000, metered as bulk plans and api plans, each with 30-day validity. SimpleVerifier is $29.99 a month with no cap on verifications, the email finder or enrichment. Both run real SMTP mailbox checks. Keep MailboxValidator if you want separate bulk and API plans, so a one-off list clean does not touch the quota your sign-up form relies on.
Prices read from mailboxvalidator.com · last checked 2026-10-12
| MailboxValidator | SimpleVerifier | |
|---|---|---|
| Cheapest route | $29.95/mo or $0.70–$19.95/1k | $29.99/mo |
| Per year | $359.40 | $359.88 |
| Verification limit | Bulk plans and API plans, each with 30-day validity | Unlimited |
| Real SMTP mailbox check | ||
| Re-verifying a list costs again | cached 14 days | |
| Email finder included | Varies by plan | Yes, unlimited |
What it actually costs, by list size
One pass over a list, on MailboxValidator’s cheapest available route versus one month of SimpleVerifier. Where MailboxValidator sells both a subscription and pay-as-you-go, the cheaper of the two is used.
| List size | MailboxValidator | SimpleVerifier | Cheaper |
|---|---|---|---|
| 1,000 | $19.951,000-credit pack at $19.95 per 1,000 | $29.99 | MailboxValidator |
| 10,000 | $59.9510,000-credit pack at $6.00 per 1,000 | $29.99 | SimpleVerifier |
| 50,000 | $139.95One month of the 75,000/mo plan | $29.99 | SimpleVerifier |
| 100,000 | $199.95100,000-credit pack at $2.00 per 1,000 | $29.99 | SimpleVerifier |
One pass only. Every figure in the MailboxValidator column recurs each time you re-verify; the SimpleVerifier column does not, because confirmed results are cached for 14 days and volume does not change the price. Adjust for your own pattern in the cost calculator.
Where MailboxValidator’s pricing bites
MailboxValidator charges $29.95 a month for 3,000 credits, or pay as you go from $19.95 per 1,000 on a 1,000 pack, falling to $0.70 at 1,000,000, and every plan, including one-time bulk plans, is listed with 30-day validity, so queries you bought and did not use do not wait for you. That is not a criticism of the product — it is how per-address pricing works, and it is fine when your volume is small and steady. It stops being fine the month you acquire a list, inherit a CRM export, or want to re-check something you verified in the spring.
The reason we can price flat is narrow and worth stating plainly: a mailbox check is a DNS lookup plus a short SMTP conversation, and it costs us nothing per address. Metering it would be a pricing choice, not a cost recovery. The one feature with a genuine per-record cost — lead sourcing — does carry a published fair-use limit of 10,000 a month.
Who should stay with MailboxValidator
Keep MailboxValidator if you want separate bulk and API plans, so a one-off list clean does not touch the quota your sign-up form relies on. A dedicated verifier replaces one part of that, not the whole thing, and switching to shave a few dollars a month while losing a workflow you depend on is a bad trade.
Test both before you decide
Do not take either vendor’s word on accuracy. Invent an address at a real domain and verify it on both. A tool doing real mailbox checks returns invalid; one checking only syntax and MX returns valid. Run the same test on any tool you are considering, ours included.
Common questions
- How much does MailboxValidator cost?
- MailboxValidator costs $29.95 a month for 3,000 credits, or pay as you go from $19.95 per 1,000 on a 1,000 pack, falling to $0.70 at 1,000,000, metered as: bulk plans and api plans, each with 30-day validity. Prices read from mailboxvalidator.com on 2026-10-12.
- Is there a cheaper alternative to MailboxValidator?
- SimpleVerifier is $29.99 a month with no limit on verifications, against $29.95 a month for 3,000 credits, or pay as you go from $19.95 per 1,000 on a 1,000 pack, falling to $0.70 at 1,000,000 for MailboxValidator. Which is actually cheaper depends on your volume and how often you re-verify — every plan, including one-time bulk plans, is listed with 30-day validity, so queries you bought and did not use do not wait for you. Keep MailboxValidator if you want separate bulk and API plans, so a one-off list clean does not touch the quota your sign-up form relies on.
- Should I switch from MailboxValidator?
- Keep MailboxValidator if you want separate bulk and API plans, so a one-off list clean does not touch the quota your sign-up form relies on. Switch if your verification volume is spiky or large and you would rather pay one flat price than manage an allowance.
- Does SimpleVerifier do real SMTP mailbox checks like MailboxValidator?
- Yes. Every address gets a syntax check, an MX lookup and an SMTP conversation with the recipient's mail server to confirm the specific mailbox. Anything the probe cannot confirm is returned as risky rather than valid, and 8,740 disposable domains are blocked outright.
Try it against your own list
$29.99 a month, unlimited verifications and API access, cancel anytime.