Show HN: How to prevent spam and disposable signups

its hard . you launch a product and share on social media ,and expect your icp will try it . But among those ,there are people will malicious intent trry to test you system and want to create several accounts using disposable emails to try to get more free stuff without paying i kow its hard ,emailverify does that stop spam signups, https://emailverify.se https://emailverify.se