SparkPost email authentication
High-volume sending platform, now part of Bird.
SPF record
Add SparkPost to your domain's SPF record with this include:
include:_spf.sparkpostmail.com
A complete record for a domain sending only through SparkPost:
v=spf1 include:_spf.sparkpostmail.com ~all
What it costs you
2 of your 10 DNS lookups. The include: itself costs one, and SparkPost's record chains to 1 more.
Live record
This is what _spf.sparkpostmail.com published when this page was generated:
v=spf1 exists:%{i}._spf.sparkpostmail.com ~all
Domains using SparkPost
Found while resolving 293 well-known domains on 2026-08-04 — each authorises
_spf.sparkpostmail.com in its published SPF record:
DKIM
Enable DKIM inside SparkPost 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 SparkPost 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.