Deliverability
SPF, DKIM and DMARC for Cold Email
A practical explanation of the three core email authentication mechanisms and how they work together.
Unlimited · runs in your browser
DMARC Generator
Build a valid DMARC TXT record in your browser and copy it to DNS.
Choosing a policy
none only collects reports. Use it first to confirm every service that sends as your domain passes SPF or DKIM.
quarantine asks receivers to treat failing mail as suspicious; reject asks them to refuse it. Use a lower percentage to phase a stricter policy in gradually.
This generator runs entirely in your browser. Nothing is sent to MailQV.
Error code guides
Common errors and how to fix them
- DMARC record missing (DMARC_MISSING)
- Multiple DMARC records (MULTIPLE_DMARC_RECORDS)
- Invalid DMARC policy (INVALID_POLICY)
Resources
Related guides
Quick reads to help you plan audiences, sending volume, sequences and measurement before launch.
Deliverability
Custom Tracking Domain for Cold Email: What It Is and How to Set One Up
Why open, click and unsubscribe links should use your own subdomain instead of a shared one, and how to set up a custom tracking domain with one CNAME record.
Provider guides
Gmail SMTP and IMAP Settings for Cold Email (with App Password)
Gmail and Google Workspace SMTP/IMAP settings, how to create an app password, and why IMAP access is what lets replies stop a cold email sequence.
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