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EmailMarker
What it is
EmailMarker verifies individual email addresses and uploaded lists to identify invalid or risky entries, helping users reduce bounces and protect sender reputation. Its checks cover syntax, typos, disposable and role-based addresses, spam traps, MX records, catch-all settings, SMTP, domain age, and a risk score. For bulk checks, users can upload CSV files, review valid, invalid, risky, and unknown results, then download cleaned lists; the stated upload limit is up to 1 million emails. A REST JSON API supports single and bulk verification with API-key authentication, and code examples or SDKs 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. Signup includes 150 free verifications at no cost, with no credit card required. One-time credit packs start at $3, paid once for 1,000 verifications. Results may vary and are not guaranteed to be absolutely accurate.
For and against
For
- 150 free signup verifications, no card required
- CSV uploads support up to 1 million emails
- API supports single and bulk verification
- SDKs or examples cover five programming languages
- One-time credits never expire
Against
- Verification results are not guaranteed absolutely accurate
- Uploaded data remains until deleted or account closure
The verdict
EmailMarker offers bulk verification, an API, and integrations alongside free signup credits and one-time credit packs. Its automated results can vary, so they are not an absolute guarantee of address validity.
Who it suits
EmailMarker suits people who need to check individual addresses or clean bulk email lists, as well as teams connecting verification to an API or listed email services.
Plans and prices
Free signup credits
150 verifications
Read 11 Oct 2026 · emailmarker.com
1,000 email verifications
1,000 verifications
Read 11 Oct 2026 · emailmarker.com
5,000 email verifications
5,000 verifications
Read 11 Oct 2026 · emailmarker.com
10,000 email verifications
10,000 verifications
Read 11 Oct 2026 · emailmarker.com
50,000 email verifications
50,000 verifications · Popular
Read 11 Oct 2026 · emailmarker.com
100,000 email verifications
100,000 verifications
Read 11 Oct 2026 · emailmarker.com
500,000 email verifications
500,000 verifications
Read 11 Oct 2026 · emailmarker.com
1,000,000 email verifications
1,000,000 verifications
Read 11 Oct 2026 · emailmarker.com
2,000,000 email verifications
2,000,000 verifications
Read 11 Oct 2026 · emailmarker.com
On the record
- 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.emailmarker.com · read 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.emailmarker.com · read 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.emailmarker.com · read 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.emailmarker.com · read 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.emailmarker.com · read 11 Oct 2026
- Integrations
- The integrations page lists Mailchimp, GetResponse, Kit, AWeber, ActiveCampaign, Klaviyo, Brevo, MailerLite, SendGrid, and Mailgun.emailmarker.com · read 11 Oct 2026
- Integration security
- The integrations page says integrations use OAuth 2.0 and encrypted API connections.emailmarker.com · read 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.emailmarker.com · read 11 Oct 2026
- Purpose
- EmailMarker verifies email addresses and email lists to remove invalid addresses, reduce bounces, and protect sender reputation.emailmarker.com · read 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.emailmarker.com · read 11 Oct 2026
- SDKs
- The maker lists SDKs or code examples for Node.js, Python, PHP, Ruby, and Go.emailmarker.com · read 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.emailmarker.com · read 11 Oct 2026
- Support
- The privacy policy identifies Crisp as the live chat and customer support platform; pricing lists priority support with purchases.emailmarker.com · read 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.emailmarker.com · read 11 Oct 2026
