What are common Outlook deliverability issues?

Common Outlook deliverability challenges:

IP reputation: Microsoft heavily weights IP history. New or shared IPs struggle. Dedicated, warmed IPs perform better.

SmartScreen triggers: Content patterns that trigger SmartScreen filtering.

Complaint rates: High Junk Reports in SNDS indicate problems.

Authentication failures: SPF or DKIM issues affect placement.

Certification gap: Senders with certification programs may receive preferential treatment.

Microsoft tends to require more established reputation than Gmail. Warming and patience are essential.

Microsoft values proven track records. Build your credentials before expecting full trust.