Email Sender Reputation Explained
Here’s what you need to know about your email sender reputation: what it is, how it’s scored, and how to protect it with monitoring and an IP warm-up plan.
read moreEmail Message Flow, Sending, and Delivery Explained
Our email pros give a helpful primer on email message flow, from sending to delivery. We help make sense of SMTP, MTA, MX, IMAP, Email API and more.
read moreDMARC Explained
DMARC is a standard for defining email authentication and enforcement. See "DMARC Explained" to learn how it works, record types, policies, and more.
read moreEmail Feedback Loop (FBL) Explained
ISPs give key signals via email feedback loops (FBLs). Managing them is crucial to email deliverability. Here are the basics you need to know about FBLs.
read moreCAN-SPAM Explained
The CAN-SPAM law established the United States’ first national regulatory standards for the sending of commercial e-mail. Here’s what you need to know.
read moreReturn-Path Explained
Return-Path is a critical header in email messages. Learn what it is and how it works here.
read moreSSL, TLS, and STARTTLS Email Encryption Explained
SSL, TLS, and STARTTLS are important email security protocols. Here’s what you need to know about how these email encryption standards work.
read moreDKIM Explained
DKIM is a technical standard for email authentication that helps ensure email wasn’t altered in transit. Here’s how it works.
read moreSPF Explained
SPF is a technical standard for email authentication that defines a domain’s authorized mail servers. Here’s how it works.
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