10 Best SPF Record Tools for Founders [2026 Updated]

1. MXToolbox SPF Record Check

• Type: Free
• URL: https://mxtoolbox.com/spf.aspx
• Overview: A lookup tool that retrieves and validates a domain's SPF record and flags syntax errors, too many DNS lookups, and other misconfigurations. It helps marketers confirm that their email sending sources are authorized so campaigns reach the inbox.

2. DMARCian SPF Surveyor

• Type: Free
• URL: https://dmarcian.com/spf-survey/
• Overview: A free tool that analyzes a domain's SPF record, showing the full tree of includes and counting DNS lookups against the 10-lookup limit. It helps teams spot SPF problems that could hurt email deliverability.

3. EasyDMARC SPF Record Checker

• Type: Free
• URL: https://easydmarc.com/tools/spf-lookup
• Overview: A free SPF lookup that validates record syntax, lists authorized senders, and reports warnings and errors. It is part of a broader email authentication suite that supports DMARC and DKIM management.

4. Kitterman SPF Validator

• Type: Free
• URL: https://www.kitterman.com/spf/validate.html
• Overview: A long-running SPF validation tool that tests a domain's SPF record and simulates how a given sending IP would be evaluated. It is useful for marketers and administrators who need to debug why legitimate email fails SPF checks.

5. PowerDMARC SPF Record Lookup

• Type: Free
• URL: https://powerdmarc.com/spf-record-checker/
• Overview: A lookup tool that tests a domain's SPF record for validity, syntax issues, and lookup-limit violations. It connects to a paid platform that offers automated SPF management through its hosted SPF feature.

6. Dmarcly SPF Checker

• Type: Free
• URL: https://dmarcly.com/tools/spf-record-checker
• Overview: A simple online checker that validates a domain's SPF record and explains any errors it finds. It suits small businesses and marketers who need a quick check before launching email campaigns.

7. Google Admin Toolbox Check MX

• Type: Free
• URL: https://toolbox.googleapps.com/apps/checkmx/
• Overview: A Google tool that checks a domain's mail configuration, including SPF, DKIM, and DMARC settings. It gives marketers a quick diagnostic of authentication issues that may send their emails to spam.

8. Red Sift OnDMARC

• Type: Paid
• URL: https://redsift.com/pulse-platform/ondmarc
• Overview: An email authentication platform that automates SPF, DKIM, and DMARC setup and monitoring, with dynamic SPF to avoid lookup-limit problems. It is built for organizations that want to protect their sending domains and keep email marketing deliverable.

9. dmarcian

• Type: Paid
• URL: https://dmarcian.com
• Overview: A DMARC management platform that includes SPF analysis, monitoring, and tools to find unauthorized or misconfigured senders. It gives marketing and IT teams visibility into who sends email on behalf of their domain.

10. Mailgun Email Deliverability Tools

• Type: Paid
• URL: https://www.mailgun.com
• Overview: An email delivery service that guides users through adding the required SPF and DKIM records to verify their sending domain. It also provides deliverability monitoring so marketers can keep sender reputation and inbox placement strong.