Email Deliverability Checker

Check Domain

Domain Name

Enter your domain to validate email authentication records, or paste records manually below.

SPF Record Validator

Sender Policy Framework — specifies which mail servers are allowed to send email on behalf of your domain.

Paste your SPF TXT record

Setup Wizard

Follow these steps to configure email authentication for your domain.

Configure SPF

Add a TXT record to your domain's DNS with the value below. Adjust include: mechanisms to match your email provider.

v=spf1 include:_spf.google.com ~all

Common providers

Google Workspace: include:_spf.google.com
Microsoft 365: include:spf.protection.outlook.com
Mailchimp: include:servers.mcsv.net
SendGrid: include:sendgrid.net
Amazon SES: include:amazonses.com

Set Up DKIM

Generate DKIM keys through your email provider and add the public key as a TXT record. The record name is usually <selector>._domainkey.yourdomain.com.

How to find your DKIM selector

Send a test email to yourself
View the raw source / headers
Search for DKIM-Signature:
Find the s= tag — that is your selector

Add DMARC Policy

Add a TXT record at _dmarc.yourdomain.com. Start with p=none to monitor, then upgrade to p=quarantine or p=reject.

v=DMARC1; p=none; rua=mailto:dmarc-reports@yourdomain.com; pct=100

DMARC policy levels

p=none — Monitor only (recommended start)
p=quarantine — Move failures to spam
p=reject — Block unauthenticated mail (strongest)

Verify & Monitor

Return here and paste your records to validate them. Monitor DMARC aggregate reports (rua) to catch issues before tightening your policy.

Email Deliverability Checker

Check Domain

SPF Record Validator

DKIM Selector Checker

DMARC Policy Analyzer

Setup Wizard

Configure SPF

Set Up DKIM

Add DMARC Policy

Verify & Monitor