Squarespace email authentication
Website builder with bundled campaign email.
SPF record
Add Squarespace to your domain's SPF record with this include:
include:squarespace-mail.com
A complete record for a domain sending only through Squarespace:
v=spf1 include:squarespace-mail.com ~all
What it costs you
1 of your 10 DNS lookups. That is the cheapest an include can be — the record it points at contains only IP ranges, with no further includes to follow. Behind it are 24 IP ranges.
Live record
This is what squarespace-mail.com published when this page was generated:
v=spf1 ip4:142.0.177.2 ip4:142.0.180.64 ip4:142.0.180.65 ip4:142.0.180.71 ip4:142.0.180.193 ip4:142.0.186.130 ip4:142.0.186.131 ip4:76.12.109.197 ip4:142.0.180.64 ip4:142.0.181.0/28 ip4:142.0.187.0/28 ip4:143.55.224.101 ip4:143.55.224.125 ip4:143.55.224.2 ip4:159.135.236.216 ip4:159.135.236.242 ip4:159.135.236.245 ip4:198.61.254.39 ip4:161.38.201.90 ip4:161.38.201.91 ip4:161.38.201.92 ip4:161.38.201.93 ip4:161.38.201.94 ip4:161.38.201.95 ~all
Domains using Squarespace
Found while resolving 293 well-known domains on 2026-08-04 — each authorises
squarespace-mail.com in its published SPF record:
DKIM
Enable DKIM inside Squarespace 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 Squarespace 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.