Stop relying on Regex for Email Validation (Here is a drop-in React component)

If you are building a SaaS, you know the pain of fake signups. Standard email regex ( ^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$ ) is no longer enough. It passes temp-mail.org , yopmail , and fat-finger typos like user@gmil.com . This leads to a database full of garbage and high bounce rates that ruin your email deliverability. I only have a couple of hours a day to work on my side projects, so I got tired of dealing with this. I spent the weekend building a "Smart" Email Input component in React that actually does deep validation. What it does differently: Live DNS/MX Check: It pings the domain to ensure it actually has active mail servers. Burner Block: It checks against a constantly updated list of disposable email providers. Typosquatting Autocorrect: It detects typos on major providers and prompts the user (e.g., "Did you mean user@gmail.com ?" ). Saves API calls: It only triggers on onBlur (when the user clicks out of the input). The Code (Open Source) I styled it with Tailwind, so