Hey all, looking for a suggestion on the best email validation service. It should check the email format, mx records and that mailbox exists to avoid bounces. There are so many services, all have similar costs and features, but I tried a few and they were terrible. Too many emails were mistakenly marked as invalid. Let me know if you used any and can recommend.
Just open some anonymous gmail accounts and send from them in groups of 99. For the bad emails you will get a message failed delivery.
but for mx record, you need to try whois the domain, whois server will block your ip after few times try