Buyer guide · SimpleVerifier Team
Email verification API pricing without per-call fees
SimpleVerifier's email verification API is included in the $29.99 monthly plan with no per-call fees: send an address, get back valid, risky or invalid with the reason. Each key has a published per-minute rate limit. Sign-up checks and bulk cleans use the same plan, so one does not eat the other's quota.
Most validation APIs are sold as a monthly request quota. That works until a bulk import and your live sign-up form compete for the same allowance, or a bot floods the form and spends the month in an afternoon.
The API reference covers authentication, the response fields and the status codes, and the SDK page has client libraries. Integration guides for common stacks fail open on timeouts, so a slow mail server never blocks a real sign-up.
Monthly cost of API volume, by vendor
| Vendor | 10,000 a month | 50,000 a month | 100,000 a month |
|---|---|---|---|
| SimpleVerifier Pro | $29.99 | $29.99 | $29.99 |
| Reoon | $11.90 | $58.95 | $116.40 |
| Bouncify | $19 | $99 | $99 |
| DeBounce | $23 | $69 | $124.20 |
| EmailListVerify | $25 | $89 | $168 |
| Mailfloss | $29 | $160 | $209 |
| Pabbly Email Verification | $29 | Not published | Not published |
| EmailValidation.io | $34.99 | $94.99 | $94.99 |
| MillionVerifier | $39 | $89 | $149 |
| Abstract API | $39 | $99 | $199 |
| Bouncer | $48 | $200 | $320 |
| NeverBounce | $49 | Not published | Not published |
| Email List Validation | $49 | $159 | $229 |
| Emailable | $51 | $208.25 | $357 |
| Clearout | $58 | $292 | $360 |
| MailboxValidator | $59.95 | $139.95 | $199.95 |
| QuickEmailVerification | $60 | $200 | $320 |
| Kickbox | $70 | $275 | $500 |
| Xverify | $70 | $250 | $400 |
| Mailboxlayer | $74.99 | $74.99 | $249.99 |
| MailerCheck | $80 | $300 | $500 |
| Email Hippo | $88.40 | $312 | $468 |
| ZeroBounce | $99 | $379 | $449 |
| Enrichley | $149 | $379 | $1,699 |
Lowest published route for that many checks a month, read from each vendor's pricing page. Validation-API vendors and verifiers with an API are both listed. Each vendor links to its comparison page, which records the date its prices were read. Check their site for current pricing before you buy.
What a response tells you
Each call returns a status (valid, risky or invalid), a reason, and flags for disposable, role and catch-all domains. 9,913 disposable domains are recognised. Addresses the mailbox probe cannot confirm are returned as risky, so you can choose whether to accept them rather than having that choice made for you.
Limits
Each API key has a per-minute call limit, published in the terms alongside the other limits. Phone format and line-type checks are on the same key.
Common questions
- How much does the email verification API cost?
- It is included in Pro at $29.99 a month, with no per-call fees. One-time packs do not include API access.
- Is there a rate limit?
- Yes, a per-key limit of calls per minute, published in the terms alongside the other usage limits.
- How long does a real-time check take?
- It depends on how quickly the recipient's mail server responds. The integration guides set a timeout and accept the address if it is reached, so a slow server never blocks a real sign-up.
Get an API key
Pro is $29.99 a month with no cap on verifications: CSV uploads, the API, the Google Sheets add-on and the email finder are included, and you can cancel any time. For a single list, one-time packs are $9 for 2,500 emails or $19 for 10,000 emails.