CampaignKit pricing: email verification API, POST /
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50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$0.00per 1,000 emailsWe haven't run CampaignKit through our email verification API benchmark yet.This plan is free. We rank 4,098 plans for email verification APIs by price. Half the plans cost $1.995 or less per 1,000 emails. See the best free email verification API plan.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: Free one of CampaignKit's 11 plans
- FreeFree$0.00 per 1,000
- $6 pack, OneTime Pass 2,500OneTime Pass 2,500$2.40 per 1,000
- $12 pack, OneTime Pass 5,000OneTime Pass 5,000$2.40 per 1,000
- $15 pack, OneTime Pass 10,000OneTime Pass 10,000$1.50 per 1,000
- $38 pack, OneTime Pass 25,000OneTime Pass 25,000$1.52 per 1,000
- $75 pack, OneTime Pass 50,000OneTime Pass 50,000$1.50 per 1,000
- $120 pack, OneTime Pass 100,000OneTime Pass 100,000$1.20 per 1,000
- $199 pack, OneTime Pass 250,000OneTime Pass 250,000$0.796 per 1,000
- $279 pack, OneTime Pass 500,000OneTime Pass 500,000$0.558 per 1,000
- $429 pack, OneTime Pass 1,000,000OneTime Pass 1,000,000$0.429 per 1,000
- Contact us, EnterpriseEnterprise
Call:
POST / one of CampaignKit's 2 calls for this APIAPI: Email verification API one of CampaignKit's 2 APIs
About this item
- Live. CampaignKit checks the email when you call the API.
- 3 of the 6 fields on our checklist. Address, Deliverability, Confidence.
- Nothing to pay. You get 200 credits once, enough for 200 results. Calls stop once your credits run out.
- One call. You send
emailstoPOST /. You set theemail/ validate Content-Typeheader to "application/json". The call returns whether each address you send takes mail. - Who can get it: every new account. Keep data: no limit. Use data: with conditions.
CampaignKit: email verification API alternatives
CampaignKit alternatives: other email verification API providers by price
The table starts with CampaignKit's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to CampaignKit's. Each plan in the table gives live data.
| CampaignKit, $429 pack, OneTime Pass 1,000,000, POST /email/validate | MyEmailVerifier, $549 monthly, Monthly Subscription, 2,000,000 emails + 100,000 bonus, GET /verifier/validate_single/{email}/{API_KEY} | EndBounce, $5,124 yearly | Proofy, $429 pack, Pay-As-You-Go, 1,000,000 credits, GET /verify/single | ReachStream, $429 pack | |
|---|---|---|---|---|---|
| $ per 1,000 emails | $0.429 | $0.424 | $0.427 | $0.429 | $0.43 |
| Completeness | 50% | 33% | 50% | 33% | 33% |
| Billing | pay first | monthly | yearly | pay first | pay first |
| Pay | $429 | $549 | $5,124 | $429 | $429 |
| Enough for | 1,000,000 results | 1,296,000 calls a month | 1,000,000 results a month | 1,000,000 calls | 1,000,000 results |
| Freshness | live | live | live | live | live |
| Who can get it | anyone | anyone | anyone aged 18 or over | anyone | 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 2026-11-08.
Product details
The key fields this plan's answer can hold, then each filled column in its row on the sheet.
- Address
- Deliverability
- Confidence
- Name, not in the answer
- Place, not in the answer
- Company, not in the answer
| $ per 1,000 emails | $0.00 |
|---|---|
| Per | result |
| Billing | free |
| Aggregators | none |
|---|
| Also pays for | from the same budget: Email Finder · Create Validation Job |
|---|
| Units cap | hard |
|---|
| $ per 1,000 | $0.00 |
|---|
| $ per 1,000 | $0.00 |
|---|
| Their pitch | The Email Validation endpoint allows you to verify the deliverability and quality of email addresses. |
|---|
| Freshness | live |
|---|---|
| What it checks | format, mail servers, disposable domains, role addresses, mailbox |
| Keep data | no limit |
| Use data | You may use the Services only for lawful purposes and in accordance with these Terms. You agree to use the Services for legitimate email verification purposes, such as: Validating opt-in email addresses for marketing campaigns, Cleaning your own email lists, Verifying business contact information, Improving email deliverability for your organization [...] You agree NOT to use the Services for any of the following prohibited activities: Spam: Sending unsolicited bulk emails or facilitating spam operations, Reselling Email Lists: Creating, maintaining, or selling email lists without proper consent, Scraping: Using the Services to scrape, harvest, or collect email addresses from websites without authorization, Malicious Activities: Using the Services for phishing, fraud, identity theft, or other criminal activities, Harassment: Using verified email addresses to harass, abuse, or harm individuals, Violation of Laws: Using the Services in any manner that violates applicable laws, including CAN-SPAM Act, GDPR, or other anti-spam regulations, System Abuse: Attempting to bypass rate limits, access restrictions, or security measures, Reverse Engineering: Attempting to reverse engineer, decompile, or extract the underlying algorithms of the Services, Automated Access: Using bots, scrapers, or automated tools to access the Services outside of our official API [...] We grant you a limited, non-exclusive, non-transferable, non-sublicensable license to access and use the Services for your internal business purposes in accordance with these Terms. You may not: Copy, modify, or create derivative works of the Services, Reverse engineer, decompile, or disassemble the Services, Remove or alter any proprietary notices from the Services, Use the Services to build a competing service |
| Pay | $0 |
|---|---|
| You get | 200 credits |
| Enough for | 200 results, once |
| Per second | 0.17 |
|---|---|
| Batch | 100 |
| Answer | in the call |
|---|
| You send | Content-Type header "application/json", emails |
|---|---|
| Method | POST |
| Path | /email/validate |
| Plan | Free |
|---|---|
| Who can get it | every new account |
The 12 fields the plan's answer can hold
email, context ID, syntax, MX, mailbox, score, classifier, description, SMTP response, did you mean, did you mean domain, credits used