Email Tools
SPF Checker
Check whether a domain has a valid SPF record configured.
Enter a domain to check its SPF record.
JustChecker tracks your email authentication records continuously.
Tool Categories
SSL Tools
DNS Tools
Domain Tools
Website Tools
Security Tools
Email Tools
Performance Tools
SEO Tools
API & Developer Testing Tools
Git & GitHub Tools
DevOps Tools
Linux & System Administration Tools
Database & SQL Tools
AWS & Cloud Tools
Kubernetes Tools
Programming Language Tools
Frontend / CSS Tools
Image / SVG Developer Tools
Security & Authentication Tools
File & Data Conversion Tools
Data / Number / Computer Science Tools