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SPECIFICTION
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EmailMarker vs EmailOversight

EmailMarker

emailmarker.com

EmailOversight

emailoversight.com

Side by side

FigureEmailMarkerEmailOversight
Price fromFree$70/mo
Free planYesYes
Free trialYesYes
Open source——
WebYesYes
iOS—Yes
Android—Yes
APIYesYes
Plans published919
Spec score · Email Verification Services8.1 (#12)9.0 (#1)
APIThe service provides a REST JSON API with single and bulk verification endpoints, API-key authentication, and valid, invalid, or unknown results.The API uses REST over HTTPS with GET or POST methods, and server IPs or client URLs must be whitelisted for access.
IntegrationsThe integrations page lists Mailchimp, GetResponse, Kit, AWeber, ActiveCampaign, Klaviyo, Brevo, MailerLite, SendGrid, and Mailgun.LinkedIn describes real-time API connections with MailChimp, Constant Contact and Salesforce.
SupportThe privacy policy identifies Crisp as the live chat and customer support platform; pricing lists priority support with purchases.Pricing pages advertise 24/7 customer support, and the site lists [email protected] and 1 (213) 325-3100.

Plans

EmailMarker

  • Free signup creditsFree
  • 1,000 email verifications$3, paid once
  • 5,000 email verifications$13, paid once
  • 10,000 email verifications$21, paid once
  • 50,000 email verifications$84, paid once
  • 100,000 email verifications$161, paid once
  • 500,000 email verifications$441, paid once
  • 1,000,000 email verifications$589, paid once
  • 2,000,000 email verifications$999, paid once

EmailMarker pricing →

EmailOversight

  • Phone Validation (Up to 100k)Free
  • Phone Validation (Up to 1MM)Free
  • Phone Validation (Up to 250k)Free
  • Phone Validation (Up to 25k)Free
  • Email Activity (under 1MM)$0.01, paid once
  • Phone Validation (up to 10k)$0.01, paid once
  • Phone Validation (Up to 10k)$0.01, paid once
  • Full Name Append (up to 10k)$0.04, paid once
  • Email Append (up to 10k)$0.10, paid once
  • Advanced Email Validation (up to 10k)$70 a month

EmailOversight pricing →

In their own words

EmailMarker

EmailMarker verifies individual email addresses and lists to help remove invalid entries, reduce bounces, and protect sender reputation. Its checks cover syntax and typos, disposable and role-based addresses, spam traps, MX records, catch-all settings, SMTP, domain age, and a risk score. For bulk work, users can upload CSV files, review valid, invalid, risky, and unknown results, and download cleaned lists; uploads can contain up to 1 million emails. The 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, and offers real-time form checks. The free signup includes 150 verifications at free. Paid credits are one-time purchases, starting at $3, paid once for 1,000 verifications. Results may vary and are not guaranteed to be absolutely accurate.

Visit emailmarker.com

EmailOversight

EmailOversight is a SaaS service for email list cleaning and validation, with related tools for phone and postal validation, email activity, data enrichment, and list export management. Email hygiene scans and real-time verification identify threats such as spam traps, hard bounces, complainers, and bots. Users can upload lists in bulk or connect through an API; real-time form checks and disposable-address detection are also listed. The API uses REST over HTTPS with GET or POST methods, and access requires whitelisting server IPs or client URLs. Email validation offers automated FTP and SFTP options, and the application and programmatic solutions can process 2 million records in a 24-hour period. Phone validation covers US numbers; postal validation checks US and Canadian residential and commercial addresses. Pricing starts at $70 a month for Advanced Email Validation, and there is no free plan. A trial includes 200 free validation credits and ends when they are used. EmailOversight is available on web and API, and is headquartered in Dover, Delaware.

Visit emailoversight.com