>I never ran into that problem with https://temp-mail.org https://temp-mail.org. They cycle domains constantly. You didn't run into that problem with temp-mail

>I never ran into that problem with https://temp-mail.org https://temp-mail.org. They cycle domains constantly. You didn't run into that problem with temp-mail.org because you happen to use them on websites that don't bother blocking disposable email addresses -- or -- they do try to block them but use simplistic domain name checks. But cycling domain names isn't enough to fool the more sophisticated disposable/throwaway email address detectors (especially the paid services) because they use extra heuristics of checking DNS MX records ip addresses. E.g. temp-mail.org assigned the following random addresses "bob531@mcatag.com" and "alice8224@javnoi.com". Both of those domains are easily detected as throwaway emails because they both share the same MX ip 24.199.65.21 : - https://verifymail.io/domain/mcatag.com https://verifymail.io/domain/mcatag.com - https://verifymail.io/domain/javnoi.com https://verifymail.io/domain/javnoi.com On the other hand, the "@mcatag.com", "@javnoi.com", etc used by temp-mail.org is good enough to get past the websites that copy&paste the code from these StackOverflow answers that just use simplistic string matching : https://stackoverflow.com/questions/10976706/how-to-block-disposable-email-addresses-in-your-websites-registration-form https://stackoverflow.com/questions/10976706/how-to-block-di... It all depends on how much effort and cost the websites want to put into blocking disposable email addresses.