EmailMarker
EmailMarker checks email addresses and lists to identify invalid or risky entries, helping users reduce bounces and protect sender reputation.
What EmailMarker is
EmailMarker checks email addresses and lists to identify invalid or risky entries, helping users reduce bounces and protect sender reputation. Its verification pipeline checks syntax, typos, disposable and role-based addresses, spam traps, MX records, catch-all settings, SMTP, domain age, and a risk score. Users can upload CSV lists, review valid, invalid, risky, and unknown results, and download cleaned lists; the stated upload limit is up to 1 million emails. A REST JSON API supports single and bulk checks with API-key authentication, and SDKs or examples are listed for Node.js, Python, PHP, Ruby, and Go. Integrations include Mailchimp, GetResponse, Kit, AWeber, ActiveCampaign, Klaviyo, Brevo, MailerLite, SendGrid, and Mailgun. EmailMarker is available on the web and through an API. Results may vary and are not guaranteed to be absolutely accurate.
Good
- Checks syntax, disposable addresses, MX records, and more
- CSV uploads support up to 1 million emails
- API offers single and bulk verification endpoints
- 150 free signup verifications; credits never expire
Watch out
- Results are not guaranteed to be absolutely accurate
- Uploaded data remains until deleted or account closure
Who it suits
EmailMarker suits teams that clean mailing lists in bulk or want to verify addresses through an API. It may also fit users of its listed email marketing and sending integrations.
Verdict
EmailMarker offers a broad set of address checks, bulk list handling, and API access, with free signup credits to start. Treat its results as indicators rather than an absolute accuracy guarantee.
Plans and prices
From EmailMarker's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free signup credits | Free | 150 verifications · 150 free verifications at signup; no credit card required |
| 1,000 email verifications | $3, paid once | 1,000 verifications · One-time payment; credits never expire |
| 5,000 email verifications | $13, paid once | 5,000 verifications · One-time payment; credits never expire |
| 10,000 email verifications | $21, paid once | 10,000 verifications · One-time payment; credits never expire |
| 50,000 email verifications | $84, paid once | 50,000 verifications · Popular · One-time payment; credits never expire |
| 100,000 email verifications | $161, paid once | 100,000 verifications · One-time payment; credits never expire |
| 500,000 email verifications | $441, paid once | 500,000 verifications · One-time payment; credits never expire |
| 1,000,000 email verifications | $589, paid once | 1,000,000 verifications · One-time payment; credits never expire |
| 2,000,000 email verifications | $999, paid once | 2,000,000 verifications · One-time payment; credits never expire |
The facts
Each one read from EmailMarker's own pages, with the date it was checked.
What it does
- Accuracy limitation
- The privacy policy says verification results are based on automated technical analysis and probabilistic models, may vary, and are not guaranteed to be absolutely accurate.checked 11 Oct 2026
- API
- The service provides a REST JSON API with single and bulk verification endpoints, API-key authentication, and valid, invalid, or unknown results.checked 11 Oct 2026
- Bulk verification
- Users can upload CSV files for bulk verification, view valid, invalid, risky, and unknown results, and download cleaned lists; the features page states up to 1 million emails per upload.checked 11 Oct 2026
- Data use
- The privacy policy says uploaded data is processed to provide the service and is not sold, rented, licensed, distributed, or used for advertising or profiling.checked 11 Oct 2026
- Enterprise
- For needs above 2 million emails, the pricing page offers custom pricing, dedicated infrastructure, unlimited API calls, no rate limits, priority support, and a dedicated account manager.checked 11 Oct 2026
- Integrations
- The integrations page lists Mailchimp, GetResponse, Kit, AWeber, ActiveCampaign, Klaviyo, Brevo, MailerLite, SendGrid, and Mailgun.checked 11 Oct 2026
- Integration security
- The integrations page says integrations use OAuth 2.0 and encrypted API connections.checked 11 Oct 2026
- Privacy and location
- The privacy policy addresses GDPR rights for EEA and UK users and says infrastructure servers are located in the United States and Europe.checked 11 Oct 2026
- Purpose
- EmailMarker verifies email addresses and email lists to remove invalid addresses, reduce bounces, and protect sender reputation.checked 11 Oct 2026
- Retention
- Uploaded data is retained until the client deletes it through the dashboard or closes the account; inactive accounts may be deleted after notice following 24 months of inactivity.checked 11 Oct 2026
- SDKs
- The maker lists SDKs or code examples for Node.js, Python, PHP, Ruby, and Go.checked 11 Oct 2026
- Security measures
- The privacy policy lists TLS/SSL encryption in transit, hashed account credentials, Cloudflare network protection and bot prevention, access controls, and infrastructure monitoring.checked 11 Oct 2026
- Support
- The privacy policy identifies Crisp as the live chat and customer support platform; pricing lists priority support with purchases.checked 11 Oct 2026
- Verification checks
- Its verification pipeline checks syntax, typos, disposable and role-based addresses, spam traps, MX records, catch-all settings, SMTP, domain age, and a risk score.checked 11 Oct 2026
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