Email Deliverability Check

Analyse your domain’s email authentication, routing, and reputation in one scan.

Press Enter or , to add each selector. Scanned alongside our 130+ built-in list.

What We Check

10 checks per domain

Email Deliverability analyses every layer of your domain's email authentication stack — from DNS records to TLS policy — and checks your sending IPs against major spam blocklists.

MX Records
Verifies mail server entries exist and route email correctly. Also detects RFC 7505 Null MX — when a domain explicitly declares it does not accept email.
SPF
Checks which servers are authorised to send email on behalf of your domain. Flags permissive ~all / +all policies.
DKIM
Confirms that outgoing messages carry a valid cryptographic signature — checked for default, google and custom selectors.
DMARC
Checks the policy that tells receivers what to do with unauthenticated mail (none / quarantine / reject).
MTA-STS
Ensures that receiving servers enforce TLS encryption for inbound email — prevents downgrade attacks in transit.
BIMI
Checks if your brand logo is configured to display in supporting email clients via the Brand Indicators for Message Identification standard.
PTR Records
Verifies that MX server IPs have correct reverse DNS entries — missing PTR records are a common cause of mail being rejected.
Blacklist Check
Spot-checks your primary MX server IP against 8 major spam blocklists including Spamhaus ZEN and Barracuda.
TLSRPT
Verifies that TLS failure reports are configured so you receive alerts when inbound TLS negotiation fails.
DMARC Reports
Checks if aggregate and forensic DMARC report addresses are configured so you receive deliverability data.