SimpleVerifier vs MailboxValidator (2026): flat $39/mo, no credits
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. One pass over 50,000 emails costs $139.95 on MailboxValidator and $39 on SimpleVerifier; a steady 50,000 a month is $139.95 against $39. SimpleVerifier plans start at $9 a month, and $39 a month flat on Pro, with no credits to buy, which is never cut off (100,000 a month at full speed). The first 100 checks are free, no card. Pick 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; pick SimpleVerifier if you verify large lists or re-check them often.
MailboxValidator prices read from mailboxvalidator.com, checked . No accuracy benchmark was run.
Is SimpleVerifier a good alternative to MailboxValidator?
One pass over 50,000 emails costs $139.95 on MailboxValidator and $39 on SimpleVerifier; a steady 50,000 a month is $139.95 against $39. Every address gets a real SMTP mailbox check, and SimpleVerifier is a flat monthly plan where MailboxValidator meters usage (bulk plans and api plans, each with 30-day validity). MailboxValidator prices read November 11, 2026.
- 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 .
| MailboxValidator | SimpleVerifier | |
|---|---|---|
| Published price | $29.95/mo or $0.70–$19.95/1k | $9/mo, Pro $39/mo |
| How usage is metered | Bulk plans and API plans, each with 30-day validity | Monthly plans; Pro is never cut off (100,000 a month at full speed, then a slower lane) |
| Free to start | See their pricing page | 100 checks, one time, no card |
| Re-checking a list | 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. | Confirmed results are cached 14 days |
| One pass over 1,000 | $19.951,000-credit pack at $19.95 per 1,000 | $9.00 |
| One pass over 5,000 | $39.955,000-credit pack at $7.99 per 1,000 | $15.00 |
| One pass over 50,000 | $139.95One month of the 75,000/mo plan | $39.00 |
| One pass over 250,000 | $339.95One month of the 375,000/mo plan | $39.00 |
| One pass over 1,000,000 | $699.951,000,000-credit pack at $0.70 per 1,000 | $39.00 |
SimpleVerifier is cheaper for one pass at 5,000 ($39.95 against $15), 50,000 ($139.95 against $39) and 250,000 ($339.95 against $39). Over a steady 50,000 a month SimpleVerifier is $100.95 cheaper. MailboxValidator prices read November 11, 2026. Cost calculator.
Cost at a steady monthly volume
| Per month | MailboxValidator | SimpleVerifier |
|---|---|---|
| 10,000 | $59.95Pay as you go: 10,000-credit pack at $6.00 per 1,000 | $39.00 |
| 50,000 | $139.95$139.95/mo plan with 75,000 a month | $39.00 |
| 100,000 | $199.95Pay as you go: 100,000-credit pack at $2.00 per 1,000 | $39.00 |
| 1,000,000 | $699.95Pay as you go: 1,000,000-credit pack at $0.70 per 1,000 | $249.00 |
MailboxValidator and SimpleVerifier in numbers
- One pass over 5,000 emails: MailboxValidator $39.95, SimpleVerifier $15.
- One pass over 50,000 emails: MailboxValidator $139.95, SimpleVerifier $39.
- One pass over 250,000 emails: MailboxValidator $339.95, SimpleVerifier $39.
- A steady 50,000 a month: MailboxValidator $139.95, SimpleVerifier $39.
- MailboxValidator pay-as-you-go credits expire.
Verdict. Pick 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. Pick SimpleVerifier if you verify large lists or re-check them often, or if you are verifying 5,000, 50,000 and 250,000 emails in a single pass.
Common questions
- Is SimpleVerifier cheaper than MailboxValidator?
- SimpleVerifier is cheaper for one pass at 5,000 ($39.95 against $15), 50,000 ($139.95 against $39) and 250,000 ($339.95 against $39). Over a steady 50,000 a month SimpleVerifier is $100.95 cheaper. MailboxValidator prices read November 11, 2026. (MailboxValidator read from mailboxvalidator.com.)
- Which should I pick for my list size: MailboxValidator or SimpleVerifier?
- Pick 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. Pick SimpleVerifier if you verify large lists or re-check them often, or if you are verifying 5,000, 50,000 and 250,000 emails in a single pass. MailboxValidator pay-as-you-go credits expire.
- When should I choose MailboxValidator instead of SimpleVerifier?
- Choose 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.
- When should I choose SimpleVerifier instead of MailboxValidator?
- Choose SimpleVerifier if you verify large lists or re-check lists often and prefer one flat monthly price.
- Is one more accurate than the other?
- No. MailboxValidator and SimpleVerifier were not benchmarked against each other, so no accuracy claim is made; run one sample with known-dead addresses through both.
- Can I test SimpleVerifier before paying?
- Yes: 100 checks, free. MailboxValidator's own free start is described on its pricing page.
Test both on your own list
100 free checks, no card; plans from $9 a month.