Free Tools
Free Email & Domain Tools
Diagnose and verify your email infrastructure with our free suite of DNS and deliverability tools. No sign-up required.
MX Record Lookup
Check which mail servers handle email for any domain. See MX records, priorities, and detected email provider.
Use ToolSPF Record Checker
Validate your domain's SPF (Sender Policy Framework) record. Check if your email authentication is properly configured.
Use ToolDMARC Record Checker
Verify your DMARC policy configuration. Check policy enforcement, reporting addresses, and alignment settings.
Use ToolBlacklist Checker
Check if your domain's mail servers are listed on email blacklists. Monitors Spamcop, Barracuda, and DroneBL.
Use ToolEmail Health Score
Send a test email and get a comprehensive deliverability score. Check authentication, spam score, blacklists, and best practices.
Use ToolBIMI Record Checker
Check if a domain has BIMI configured. Verify the brand logo URL, SVG format, and Verified Mark Certificate (VMC) status.
Use ToolMTA-STS Checker
Verify MTA-STS configuration for strict transport security. Check DNS records, policy files, and TLS-RPT reporting setup.
Use ToolFree Email Providers
Browse a searchable database of 4,700+ free email provider domains. Filter by category: major, regional, privacy-focused, and more.
Use ToolDisposable Email Domains
Browse 110,000+ known disposable and temporary email domains. Updated daily. View MX records and provider details for each domain.
Use ToolNeed to validate emails at scale?
Our API lets you verify email addresses, check deliverability, and protect your sender reputation programmatically.