SPF flattening services: pros and cons
Overview
SPF 10 DNS lookup limit drives flattening vendors—trade DNS agility for static record publishing.
Pros
Fits many SaaS senders under one record; faster marketing launches historically.
Cons
Vendor outage or misconfig propagates widely; another bill and trust dependency.
Alternative
Subdomain delegation for streams (mail1.domain.com SPF) where possible.
Decision
Finance + security sign-off documenting exit plan if flatten vendor fails.
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