Free Tools

Powerful utilities to boost your email deliverability and infrastructure health

Validate email addresses in real-time. Check syntax, MX records, and mailbox existence to keep your lists clean and reduce bounces.

Diagnose your domain's email infrastructure. Check SPF, DKIM, DMARC, MX records, and SMTP connectivity in one comprehensive scan.

Coming Soon

Automated email warmup service to build sender reputation and improve inbox placement rates for new or cold domains.

Stay Tuned

These tools are built and maintained by the LexLab team to help you optimize your email deliverability and monitor your infrastructure health.