HubSpot email authentication
CRM with bundled marketing email, widely used by B2B teams.
SPF record
Add HubSpot to your domain's SPF record with this include:
include:_spf.hubspot.com
A complete record for a domain sending only through HubSpot:
v=spf1 include:_spf.hubspot.com ~all
What it costs you
3 of your 10 DNS lookups. The include: itself costs one, and HubSpot's record chains to 2 more.
Behind it are 24 IP ranges.
Live record
This is what _spf.hubspot.com published when this page was generated:
v=spf1 ip4:54.174.63.0/24 ip4:54.174.52.0/24 ip4:52.40.63.40 ip4:52.40.63.41 ip4:52.40.63.42 ip4:52.88.240.251 ip4:52.40.63.27 ip4:52.40.63.5 ip4:52.40.63.29 include:sendgrid.net -all
DKIM
Enable DKIM inside HubSpot and publish the selector record it generates. DKIM matters more than SPF for deliverability, because a DKIM signature survives forwarding while SPF does not — see how selectors work.
DMARC
Neither SPF nor DKIM protects the address your recipients actually see until DMARC ties them
to it. Once HubSpot is authenticating, publish a DMARC record — start at
p=none with a reporting address and
tighten from there.
Check it worked
DNS changes take minutes to hours to propagate. Once published, run the domain through the checker — it resolves the full include chain and reports the real lookup count.