TestMail by TehnoGuru

See what protects your email domain.

Check SPF, DMARC, mail routing, and transport policy. When DNS is not enough, send one message to a temporary test address and verify what actually arrived.

Check a domain

Free to use. No account required.

From domain to next action.

  1. Check

    Enter a domain to review its public email-security records.

  2. Verify

    Send one test email when you need live DKIM and receipt evidence.

  3. Fix

    Work through the prioritised actions with evidence beside each result.

  4. Retest

    Run the same check after a DNS or mail change and confirm the evidence improved.

See the answer before you run a check

This fixed, anonymised example uses no customer data and makes no claim about a real domain.

Anonymised sample

example-business.test

Fixed demonstration data · DNS check

68/85 Example score

Core sender controls are present, but DMARC is not yet enforcing and transport reporting is missing.

  1. Priority 1

    Move DMARC beyond monitoring

    Why it matters
    A monitoring-only policy does not ask receiving systems to quarantine or reject failed mail.
    Observed evidence
    v=DMARC1; p=none; rua=mailto:dmarc@example.test
    Fix next
    Validate legitimate senders, then stage pct and policy changes toward quarantine or reject.
  2. Priority 2

    Add TLS failure reporting

    Why it matters
    Without TLS-RPT, delivery teams have less evidence when encrypted transport fails.
    Observed evidence
    No TXT record observed at _smtp._tls
    Fix next
    Publish a valid TLS-RPT record with an actively monitored report destination.
  3. Observed

    SPF is present

    Why it matters
    The domain publishes a sender-authorisation policy with a terminal mechanism.
    Observed evidence
    v=spf1 include:_spf.example.test -all
    Fix next
    Retest after changing authorised senders and keep DNS lookup count within SPF limits.

After a change, rerun the check and compare the new score and evidence with the previous result in this browser session.

Check my domain

Managed monitoring is coming later

Use the free checker or live-email test now. Ongoing monitoring is not accepting requests yet.

Coming later

No account, subscription, or payment is created here.

Check a domain