SendPulse sends your Email and SMTP traffic from shared servers until you publish its SPF include and DKIM selector — one record set that covers both.
SendPulse wants one TXT SPF record — v=spf1 include:mxsspf.sendpulse.com +a +mx ~all (the +a +mx also authorize your domain's own A and MX hosts) — and a DKIM TXT record at the fixed selector sign._domainkey. Its Email and SMTP services share the same record set, so you publish it once and both align. Source: sendpulse.com/knowledge-base · verified 2026-07-15
p=none and a rua address, watch reports for a week, confirm this sender shows 100% pass.No. Adding SPF includes and DKIM records only adds authentication — it never blocks existing mail. The only risky step is tightening your DMARC policy, and that comes later, after reports confirm everything passes.
Send yourself a test email and inspect the headers for spf=pass, dkim=pass and dmarc=pass — or just watch your DMARCKeeper dashboard: the sender's pass rate should hit 100% within a day or two.
Yes. SPF and DKIM authenticate mail; DMARC is what tells receivers to BLOCK mail that fails, and it's the piece Gmail, Yahoo and Outlook now check for explicitly.