Unspam pricing: email verification API, POST /
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50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$6.40per 1,000 emailsWe haven't run Unspam through our email verification API benchmark yet.Half of the 4,041 plans we rank by price cost $1.999 per 1,000 emails or less. This plan costs less per 1,000 emails than 17% of the 4,041 plans.treg's top-up from $10 is the cheapest paid plan per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $68.365 per 1,000 emails when no provider answers. StableEnrich's pay-as-you-go plan costs the least for 10,000 emails a month: $0.05.Disify's $9 monthly plan (/
Plan: Custom plan, first 1,000 verifications a month one of Unspam's 8 plans
- $5 monthly, Custom plan, first 1,000 verifications a monthCustom plan, first 1,000 verifications a month$6.40 per 1,000
- $6.40 monthly, Custom plan, next 9,000 verifications a monthCustom plan, next 9,000 verifications a month$4.00 per 1,000
- $42.40 monthly, Custom plan, next 90,000 verifications a monthCustom plan, next 90,000 verifications a month$2.40 per 1,000
- $258.40 monthly, Custom plan, over 100,000 verifications a monthCustom plan, over 100,000 verifications a month$1.20 per 1,000
- $51 yearly, Custom plan, annual billing, first 1,000 verifications a monthCustom plan, annual billing, first 1,000 verifications a month$5.44 per 1,000
- $65.28 yearly, Custom plan, annual billing, next 9,000 verifications a monthCustom plan, annual billing, next 9,000 verifications a month$3.40 per 1,000
- $432.48 yearly, Custom plan, annual billing, next 90,000 verifications a monthCustom plan, annual billing, next 90,000 verifications a month$2.04 per 1,000
- $2,635.68 yearly, Custom plan, annual billing, over 100,000 verifications a monthCustom plan, annual billing, over 100,000 verifications a month$1.02 per 1,000
Call:
POST / one of Unspam's 2 callsPOST /$5 monthly, Custom plan, first 1,000 verifications a month$6.40 per 1,000email-verification/ instant-checks POST /$5 monthly, Custom plan, first 1,000 verifications a month$6.40 per 1,000email-verification/ list-checks
API: Email verification API Unspam's only API
About this item
- Live. Unspam checks the email when you call the API.
- 3 of the 6 fields on our checklist. Address, Deliverability, Company.
- A monthly subscription. You pay this price for each of the first 1,000 calls each month. You pay at least $5 a month.
- One call. You send
emailtoPOST /. The call returns a job. You fetch the answer once the job is done.email-verification/ instant-checks - Who can get it: anyone above the age of 18. Keep data: no limit. Use data: with conditions.
Unspam: email verification API alternatives
Unspam alternatives: other email verification API providers by price
We list other providers' plans closest to this plan in price per 1,000 emails. Each plan in the table gives live data.
| This planUnspam, $5 monthly, Custom plan, first 1,000 verifications a month, POST /email-verification/instant-checks | Anymail Finder, $384 yearly | SafetyMails, $12.80 monthly | Gamalogic, $16 pack, Pay As You Go, 2,500 Credits, POST /batchemailvrf | Oppora, $96 quarterly, Pro, POST /email/verify, Verify email (advanced mode) | |
|---|---|---|---|---|---|
| $ per 1,000 emails | $6.40 | $6.40 | $6.40 | $6.40 | $6.40 |
| Completeness | 50% | 17% | 33% | 17% | 33% |
| Billing | monthly | yearly | monthly | pay first | quarterly |
| Pay | $5 | $384 | $12.80 | $16 | $96 |
| Enough for | as many as you pay for | 60,000 calls a year | 2,000 calls a month | 2,500 results | 5,000 calls a month |
| Freshness | live | live | live | live | live |
| Who can get it | anyone above the age of 18 | businesses only | anyone 18 or of legal age in their jurisdiction, individuals and legal entities | anyone 18 or over, with authority to bind their organization when using it for one | anyone |
Sources
From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.
Product details
The key fields this plan's answer can hold, then each filled column in its row on the sheet.
- Address
- Deliverability
- Confidence, not in the answer
- Name, not in the answer
- Place, not in the answer
- Company
| $ per 1,000 emails | $6.40 |
|---|---|
| Per | call |
| Billing | monthly |
| $ a month | $5 |
| Aggregators | none |
|---|
| Also pays for | from the same budget: Verify email list |
|---|
| Add-ons | 1,000 credits once for $8 ($8.00 per 1,000) |
|---|
| $ per 1,000 | $0.00 |
|---|
| $ per 1,000 | $6.40 |
|---|
| Their pitch | Verify one address or a list of up to 100,000 over REST, and read back a status, a reason and an action for each, paying only for definitive answers. |
|---|
| Freshness | live |
|---|---|
| What it checks | format, mail servers, disposable domains, role addresses, mailbox |
| Keep data | no limit |
| Use data | If you are on the Custom plan, or on a White Label plan we issued to you, you may integrate the Service, including the API and the MCP server, into your own products and services, and you may offer and resell the results to your own clients under your own brand, without attribution to Unspam. You remain responsible for how your clients use the results and for their compliance with these Terms, and you must keep your API tokens confidential. |
| Pay | $5 |
|---|---|
| You get | from the 1st call a month |
| Expires | the monthly allowance resets on the billing anniversary |
| Per second | 1.67 |
|---|---|
| Batch | 1 |
| Answer | by polling |
|---|
| You send | |
|---|---|
| Method | POST |
| Path | /email-verification/instant-checks |
| Plan | Custom plan, first 1,000 verifications a month |
|---|---|
| Who can get it | anyone above the age of 18 |
The 23 fields the plan's answer can hold
ID, email address, check status, status, reason, action, flags, did you mean, domain, mail provider, MX records, MX accepts mail, SMTP connected, mailbox accepts, catch-all, full inbox, disabled, disposable, role, free provider, charged, created at, completed at