Rcheck

UserCheck is an email validation API that identifies and blocks fake email addresses, including disposable, relay, and public domains, to prevent spam signups. It serves developers and businesses of all sizes, from startups to enterprises, who need to verify user emails in real time. The service is delivered as a low-latency API with a free tier and enterprise options, and it differentiates itself by maintaining an up-to-date database of disposable email providers and offering smart email suggestions.

Key features

• Disposable email detection
• Email forwarding detection
• MX records validation
• Public email detection
• Smart email suggestions
• Role account detection
• Syntax validation
• Bulk email validation
• Custom blocklist
• Webhooks