DeliverSight Run a free test

Know why your email lands in spam.

Send one message to your test address. We grade its authentication, reputation and content out of ten and show the exact line to change. No account, every report a link.

  1. 1 Copy the address
  2. 2 Send it any email
  3. 3 Read the report
from[email protected] tocheck-uoufz…@in.deliversight.com
9.0/10

Authentication

What mx.deliversight.com wrote in the Authentication-Results header.

  • spf pass smtp.mailfrom=acme-corp.com
  • dkim pass header.d=acme-corp.com
  • dmarc fail header.from=acme-corp.com (p=quarantine)
Fix

DMARC failed because the From domain doesn't align. Publish a matching SPF record for acme-corp.com and the point comes back.

Score breakdown

  • spfpass · ip allowed by v=spf10
  • dkimpass · signature verified0
  • dmarcaligned · p=quarantine0
  • dnsbl0 of 12 lists0
  • spam0.10 of 5.000
  • contentno List-Unsubscribe header−1.0
  • uribl3 linked domains, none listed0
Open a live report →

What we check

spf=
Is the connecting IP allowed to send for the domain in your envelope?
dkim=
Does the signature verify — proof nothing was altered in transit?
dmarc=
Do SPF or DKIM line up with the From domain your reader actually sees?
dnsbl=
Is your sending IP or domain on a blocklist that mailbox providers trust?
spam=
How a full spam engine rates the content, headers and structure of the message.
content=
A List-Unsubscribe header, a plain-text alternative, and the headers inboxes expect.
uribl=
Every domain you linked to, checked against URI blocklists of its own.
How each check is scored →

Beyond one test

DMARC reports
Point your domain's rua at us and see everyone sending as you — parsed, charted, flagged when a source you don't recognise appears.
Monitors
SPF, DKIM, DMARC, TLS and blocklist status re-checked around the clock; alerts by email, in-app, Slack, Teams or Telegram.
API + webhooks
Create tests from CI, read scores back, get a webhook when a result lands.
All features →

Plans

Start free. Pay when you're watching, not just checking.

Full pricing and FAQ →

Waiting for your message at ••••••••@in.deliversight.com Open report →