Free email deliverability tools
Check DNS records, SMTP connection settings, authentication readiness and safer warmup volume before you spend on campaigns.
Free checks before you connect or scale.
Use these tools to check DNS, SMTP, authentication, copy risk and sending limits before starting warmup or campaigns.
SPF Checker
Check whether the SPF TXT record is present and readable.
Open page →DMARC Checker
Review the domain DMARC record and policy basics.
Open page →DKIM Checker
Check a DKIM selector and public key record.
Open page →SMTP Tester
Test host, port, encryption and credentials before connecting.
Open page →MX Record Checker
Review receiving-mail DNS records for a domain.
Open page →DNS Health Checker
Review SPF, DMARC, MX and core DNS together.
Open page →Warmup Calculator
Estimate a safer warmup ramp for a domain.
Open page →Sending Limit Calculator
Estimate starting daily limits by domain age and mailboxes.
Open page →Email Spam Checker
Review risky copy patterns before sending campaigns.
Open page →Blacklist Checker
Check basic domain/IP reputation signals.
Open page →Authentication Checker
Review SPF, DKIM and DMARC readiness in one place.
Open page →Deliverability Audit
Request a manual review of your domain and sending setup.
Open page →Ready to check your sending setup?
Start with a 7-day demo, connect your domain, verify DNS, and cancel before day 7 if you do not want the selected monthly plan to renew.