Reachable
Audit
Header Analyzer
DNS Simulator
Reach
able
Domain Audit
Sending domain
SPF · DKIM · DMARC · MX · BIMI · blacklists
DKIM selector
optional
Find in the s= field of your DKIM-Signature header
Sending IP
optional
rDNS · forward-confirm · IP blacklists
Bounce domain
optional
Envelope sender — SPF alignment check
Reach
able
Header Analyzer
📄
Drop a
.txt
or
.eml
file, or
browse to upload
or paste headers below
Reach
able
DNS Simulator
Domain
for context
Used for context, not queried live
Record type
SPF (TXT record)
DMARC (TXT record)
Proposed record value
Paste the value exactly as you plan to publish it in DNS