Email Verification API benefits our email marketing efforts
July 20, 2021

Email Verification API benefits our email marketing efforts

Anonymous | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User

Overall Satisfaction with WhoisXML Email Verification API

We launched one of our websites a year ago with the Email Verification API already integrated into the signup process. We wanted our users to be able to make sure they type in the correct email address all the time. We also wanted to screen our subscribers’ email addresses and ensure that those that make it to our mailing list are valid and existing. Email verification benefits both our subscribers and us. On our part, we can reach out to them through email to keep them informed of relevant information about their subscriptions.
  • It helps our system automatically tell users when they mistype their email addresses or provide nonexistent ones. It helps improve customer experience since they aren’t left assuming they entered the correct email address, only to wait for responses.
  • I like that the vendor made Email Verification API available in several languages and client libraries— PHP, Node.js, Python, Flask, and Express.js. For the dev team, it took a weight off our shoulders in terms of coding.
  • There is a maximum number of requests per second, which is 10. While this is a reasonable number, and we haven’t had any issue after a year of using the API, that is something that dev teams should take note of.
  • Syntax check
  • Mail server existence
  • Decrease in email bounce rates and, therefore, less likelihood of getting tagged as a spammer.
  • Good customer signup experience.

Do you think WhoisXML Email Verification API delivers good value for the price?


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Did WhoisXML Email Verification API live up to sales and marketing promises?


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Would you buy WhoisXML Email Verification API again?


We initially used it because we know that our target website visitors are prone to mistyping email addresses. We wanted to provide a good experience for them. Over time, we realized that it also benefited our email marketing efforts. So if you’re going to validate users’ email addresses upon signup, Email Verification API can help.

WhoisXML Email Verification API Support

Prompt and professional support.
Quick Resolution
Good followup
Knowledgeable team
Kept well informed
No escalation required
Immediate help available
Support understands my problem
Support cares about my success
Quick Initial Response
We first reached out to the support team because we had some questions about the API’s implementation and wanted to know if they accept payments in Bitcoin. They responded promptly and were very helpful.