NumberChecker - Bulk WhatsApp, phone & email verifier for marketing.

Hey Product Hunt! I’m Hamid, the maker of NumberChecker.cloud. I originally built this because working with large contact lists was frustrating. Before running a campaign, you often don’t know how many numbers are actually active, which ones use WhatsApp, whether an email is active, or which communication channel is worth using. So I built one platform where you can upload a list and run different checks in bulk — including: • WhatsApp number status • Phone number activity • WhatsApp age & gender signals • RCS availability • iOS status • Gmail, Yahoo & Outlook verification • REST API for automated workflows One thing I cared about a lot was keeping it simple: upload → choose the check → download the results. There are no subscriptions either. Credits are pay-as-you-go. I’ve mostly built NumberChecker.cloud myself, so launching it publicly is a pretty big moment for me 😄 I’d genuinely love feedback from the Product Hunt community — especially on the product, onboarding, pricing and anything that feels confusing or could be improved. Thanks for checking it out!