How do you interpret mixed inbox results across providers?

Interpreting provider variations:

Common patterns:

Good at Gmail, bad at Microsoft (engagement vs IP focus)

Good at consumer ISPs, bad at corporate (different policies)

Good overall, bad at one provider (specific issue)

Analysis approach:

Identify which providers have issues

Research what those providers emphasize

Check provider-specific tools (Postmaster, SNDS)

Provider priorities:

Gmail: engagement, user behavior

Microsoft: IP reputation, complaints

Yahoo: complaint rates

Corporate: policies, blocklists

Response:

Provider-specific remediation

May need different strategies per provider

Different port authorities have different priorities. Understand each one.