Free Email Tools
Generate DNS records, check your bounce rate, and improve email deliverability — all free, no signup required.
SPF Record Generator
Create a valid SPF TXT record for your domain. Select your email providers, add custom IPs, and choose your enforcement policy.
Use toolDMARC Record Generator
Generate a DMARC TXT record to protect your domain from spoofing. Configure policy, reporting addresses, and subdomain rules.
Use toolBounce Rate Calculator
Calculate your email bounce rate and get actionable recommendations. Compare against industry benchmarks and identify list health issues.
Use toolFrequently Asked Questions
What is an SPF record and why do I need one?
An SPF (Sender Policy Framework) record is a DNS TXT record that specifies which mail servers are authorized to send email on behalf of your domain. Without an SPF record, receiving servers cannot verify that emails claiming to be from your domain are legitimate, which increases the chance of your emails landing in spam or being rejected entirely.
What is DMARC and how does it protect my domain?
DMARC (Domain-based Message Authentication, Reporting, and Conformance) is an email authentication protocol that builds on SPF and DKIM. It tells receiving mail servers what to do when an email fails authentication checks — none (monitor only), quarantine (send to spam), or reject (block entirely). DMARC also provides reporting so you can see who is sending email using your domain.
What is a good email bounce rate?
A healthy email bounce rate is below 2%. Bounce rates between 2% and 5% indicate potential list quality issues and should be addressed. Rates above 5% are critical and can damage your sender reputation, leading to deliverability problems across all your campaigns.
Are these email tools really free?
Yes, all tools on this page are completely free to use with no signup required. They run entirely in your browser — no data is sent to any server. For bulk email verification and advanced deliverability features, check out MailEntriX paid plans.
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