How to Find valid emails for Catch-All Domains ?
How email services verify emails for Catch-All Domains.
Is there any specific way to clean list for these domains ?
I don’t know how they do this, but I recommend this paltform. It’s easy to use and very cost-effective. Besides Catch-All domain detection, it provides a lot of e-mail validation services. You can test it – they have a free trial version for 100 emails