Free tools
Free email security tools
Look up DNS records and generate DMARC and SPF records — all free, explained in plain English. No account required.
Checking DKIM? It needs a selector — use the full lookup tool.
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DNS Record Lookup
Look up DMARC, SPF, DKIM, BIMI, and MX records for any domain. Results are explained in plain English — no technical knowledge required.
Open toolDMARC Record Generator
Build a valid DMARC record using a simple form — no technical knowledge needed. Choose your policy, set your reporting address, and copy the result directly into your DNS.
Open toolSPF Record Generator
Select your email providers (Google Workspace, Microsoft 365, Mailchimp, SendGrid, etc.) and we'll generate the correct SPF record automatically.
Open toolNot sure where to start?
Which tool do I need?
Adding a new email service?
Add it to your SPF record without going over the 10-lookup limit.
SPF Record GeneratorComing soon
More tools on the way
DMARC Record Validator
Paste in your existing DMARC record and get an instant analysis. We'll flag misconfigurations and explain what each tag means in plain English.
SPF Record Validator
Validate your SPF record and check for the common 10-DNS-lookup limit issue that causes silent email delivery failures.
DKIM Key Pair Generator
Generate a DKIM public/private key pair for your domain. Includes step-by-step instructions for configuring keys in Google Workspace, Microsoft 365, and cPanel.
Email Header Analyzer
Paste an email's headers to trace where it came from and see its SPF, DKIM, and DMARC results.
Want these checks running 24/7?
These tools give you a one-time snapshot. MonitorDMARC watches your DNS records and DMARC reports continuously and alerts you the moment something changes.
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