TUESDAY · 09 JUN · 2026
The Authentication Journal

Skysnag
Intelligence

Fortis per veritatem — strong through verification.
Protocols & Standards DMARC · SPF · DKIM · MTA-STS · BIMI
Threat & Defense BEC · Phishing · Lookalikes · Forensics
Compliance NIS2 · DORA · PCI · SOC 2 · HIPAA
Practice & Channel MSP · Case Files · Dispatches
Front Page Tuesday, June 9, 2026
Gmail vs Outlook Deliverability: Key Differences You Need to Know

Gmail vs Outlook Deliverability: Key Differences You Need to Know

Gmail and Outlook use different filtering algorithms and authentication requirements. Learn platform-specific optimization strategies to maximize deliverability.

Filed 21 Apr 2026 · 6 min read

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A
Section A · Protocols & Practice

Authentication & Deliverability

The standards that prove who you are — and the practices that keep you in the inbox.

Email Authentication & Standards

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DMARC Quarantine vs Reject: Which Policy Delivers Better Results?

DMARC Quarantine vs Reject: Which Policy Delivers Better Results?

Compare DMARC quarantine and reject policies for optimal email delivery and security. Expert analysis of enforcement impacts, provider behavior, and…

7 min read
BIMI vs Traditional Email Branding: Security and Trust Comparison in 2026

BIMI vs Traditional Email Branding: Security and Trust Comparison in 2026

Compare BIMI with legacy email branding methods. Discover how authenticated visual identity provides superior security and trust compared to traditional…

6 min read
SPF Record Exceeding 10 DNS Lookups: Flattening and Optimization Fixes

SPF Record Exceeding 10 DNS Lookups: Flattening and Optimization Fixes

Solve SPF's 10 DNS lookup limit with proven record flattening and optimization techniques. Step-by-step guide to prevent PermError failures.

7 min read

Email Deliverability & Best Practices

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73% of Legitimate Emails Hit Spam: How SPF Breaks Delivery

73% of Legitimate Emails Hit Spam: How SPF Breaks Delivery

SPF misconfigurations cause 73% of legitimate emails to miss inboxes. Learn how DNS lookup limits and envelope alignment issues break…

6 min read
The Hidden Reason Your Marketing Emails Get Blocked

The Hidden Reason Your Marketing Emails Get Blocked

DKIM alignment failures silently destroy sender reputation, causing marketing emails to get blocked without obvious warning signs or clear attribution.

8 min read
7 DMARC Errors That Tank Your Inbox Placement Rate

7 DMARC Errors That Tank Your Inbox Placement Rate

Critical DMARC configuration mistakes that destroy email deliverability metrics and specific fixes to optimize inbox placement rates across major providers.

9 min read
Elevated
D
Section D · Leaders' Forum

IT & Security Leadership

In enterprise environments, maintaining control of email security depends less on individual protocols and more on clear ownership and consistent management of authentication controls.

H
Section H · The News Wire

Dispatches

The newsroom feed — Skysnag platform releases and what's moving in email security, filed as it happens.

Weekly · Every Tuesday · 06:00 GMT

The Authentication Brief.

A weekly dispatch for security leaders, MSPs, and deliverability engineers. Threat advisories, standards movement, and one piece of long-form analysis — edited by the Skysnag research group.

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