Find the right email tool
Choose what you want to check. Each tool below tells you what to provide and what you’ll learn.
Test a real email
See what happens when your sending service delivers a message.
Check authentication
Inspect the DNS records behind your sender identity and brand.
SPF Record Checker
Enter your sending domain to inspect its published SPF policy, mechanisms and DNS lookup risks.
DKIM Record Checker
Enter a signing domain and selector to inspect the published DKIM public key and its configuration.
DMARC Record Checker
Enter your From domain to inspect its DMARC policy, alignment settings and reporting destinations.
BIMI Record Checker
Enter your sending domain and an optional selector to inspect its BIMI record, logo and DMARC prerequisite.
Check mail infrastructure
Review mail routing, transport policies and public IP blocklist results.
MX Record Checker
Enter a receiving domain to find its mail servers, MX priorities and IPv4 or IPv6 addresses.
MTA-STS Checker
Enter a receiving domain to inspect MTA-STS DNS discovery, its HTTPS policy and matching MX hosts.
TLS-RPT Record Checker
Enter a receiving domain to inspect its TLS reporting record and the syntax of its report destinations.
IP Blacklist Checker
Enter a public sending IPv4 address to see its listing status on the enabled PSBL and DroneBL blocklists.
Inspect a saved message
Explore a saved email without sending a new test.