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PowerMTA Experts

Free tools

Small tools, no sign-up, nothing leaves your browser.

Utilities we reach for ourselves. They run entirely in your browser — nothing you type is sent anywhere. More to follow; tell us what would help.

DMARC record generator

Build a DMARC record

Fill in the fields and copy the result into a TXT record at the host shown. Start at p=none to monitor, then move to quarantine and reject once your reports are clean.

Host (TXT name)

_dmarc.example.com

Value

v=DMARC1; p=none;

Spam-complaint rate

Check your complaint rate

The metric that overrides the others. Keep it under 0.10%; 0.30% — three complaints per thousand — is the line where providers act regardless of how clean your authentication is.

Complaint rate

0.060%

0.60 per 1,000

A tool can flag it. We fix it.

If a record looks wrong or a rate looks high, the free 25-point audit traces it to the cause across your whole setup.