Email Checker Website Semrush May 2026

.header p opacity: 0.9; font-size: 1.1rem;

<div class="results" id="results"> <div class="score-card"> <div class="score" id="score">0</div> <div class="status" id="status"></div> </div> email checker website semrush

// MX records check async function checkMXRecords(domain) return new Promise((resolve) => dns.resolveMx(domain, (err, addresses) => ); ); .header p opacity: 0.9

.check-message margin-top: 10px; font-size: 0.9rem; color: #666; div class="results" id="results"&gt

return passed: !isRisky, message: isRisky ? 'SMTP check limited for this domain' : 'SMTP verification passed', verified: !isRisky ;

This creates a production-ready email checker similar to Semrush's tool with comprehensive validation and a professional UI.

// Domain existence check async function checkDomain(domain) return new Promise((resolve) => dns.resolve(domain, 'A', (err, addresses) => !addresses ); );