BounceProtect
Clean your email lists before you send
Validate your SPF record instantly.
Check if a domain has a valid SPF record configured. Instantly look up and validate SPF DNS records — free, no signup required.
What is an SPF record?
SPF (Sender Policy Framework) is a DNS record that lists the mail servers authorised to send email on behalf of your domain. When a receiving server gets an email from your domain, it checks the SPF record to verify the sender is legitimate. A missing or misconfigured SPF record increases your chances of landing in spam.
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Want to validate your whole list?
BounceProtect validates emails in bulk — SMTP, MX, catch-all detection, and company intelligence.
18.4M
emails validated this month
42,000+
domains protected
99.2%
accuracy on independent benchmarks
99.2%
accuracy on independent benchmarks
Frequently asked
A valid SPF record starts with v=spf1, lists the authorised senders using include, ip4, or ip6 mechanisms, and ends with ~all or -all. Example: v=spf1 include:_spf.google.com ~all
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Done with the generator?
Make sure none of your 10,000 contacts are about to bounce.
You just authenticated your domain. Now check the list you're about to send is clean. BounceProtect verifies email addresses in bulk — catch-all detection, SMTP validation, MX checks — before they damage your sender reputation.
87%
Average bounce rate reduction in first 30 days
12s
Average analysis time for a 10k list