Corporate email deliverability: the 2027 planning guide
Trust, reputation and engagement: a practical framework for understanding inbox placement, backed by current standards and provider guidance.
Read the guide →Understand your email.
The standards, the evidence and the decisions behind reliable corporate email. Practical explanations with primary sources.
SPF explained for corporate email
What SPF authorises, why forwarding matters and how to investigate a failing SPF result.
Read the guide →DKIM explained: signing business email
How DKIM connects a message to a signing domain, and what a valid signature does not establish.
Read the guide →DMARC explained: alignment, policy and reporting
How DMARC connects SPF or DKIM to the visible From domain, and how to plan enforcement safely.
Read the guide →Email sender reputation: how to investigate it
Read provider signals in context and separate sending streams before changing infrastructure.
Read the guide →Email engagement: what can you actually measure?
Separate recipient interest, tracking events and the business purpose of an email.
Read the guide →Email message tracing: sent, accepted, delivered or seen?
Build an evidence chain without overstating what a log entry proves.
Read the guide →Email forwarding and ARC explained
Why intermediaries complicate authentication and how ARC preserves context.
Read the guide →Phishing explained: a corporate defence guide
Combine filtering, identity protection, reporting and response around the way your people work.
Read the guide →Business email compromise: beyond malicious links
Understand impersonation, compromised accounts and the business controls that protect payments.
Read the guide →Secure email gateways, API protection and native controls
Choose protection around mail flow, response capability and the evidence your team needs.
Read the guide →Email TLS, MTA-STS and TLS reporting explained
Transport protection is a separate question from sender identity and inbox placement.
Read the guide →