Pawan T.
I used Hunter.io to verify email…
I used Hunter.io to verify email addresses. Once Hunter verified a list of 70 odd email ids I sent cold emails on the verified ones. However, many emails still bounced. Therefore, I can assume that the algorithm used isn't exactly fool-proof.
Response from Hunter.ioJun 19, 2026
Hi Pawan, Thanks for sharing your experience! Looking at your bulk verifier results, more than half of the email addresses came back as "accept-all." Accept-all domains are configured to accept every incoming message at the server level, which means we cannot individually verify whether a specific address is valid or not. We always share this status transparently so you can decide whether to include those contacts based on your own sending reputation and risk tolerance. We would be happy to review the bounced emails with you in more detail. Feel free to reach out at [email protected] and we can take a closer look. Laura - Customer Success @ Hunter



