What is an SPF Record and How to Configure It?
Learn what Sender Policy Framework (SPF) is, why it's crucial for email deliverability, and how to set it up correctly for your domain.
Read articleEmail Deliverability & DNS Blog
Expert guides on SPF, DKIM, DMARC, and keeping your email lists clean.
DKIM Explained: Increasing Email Security
DomainKeys Identified Mail (DKIM) adds a digital signature to your emails. Find out how it works and how to implement it.
Read articleDMARC Policy Guide: Protect Your Domain
DMARC serves as the master controller for SPF and DKIM. Learn how to use DMARC policies to block spoofing attempts.
Read articleMX Records: The Backbone of Email Receiving
Mail Exchange (MX) records direct email to your mail servers. Understand priority, TTL, and common configuration mistakes.
Read articleReverse DNS (PTR) Records and Email
Why Reverse DNS is critical for sending servers and how to verify your PTR records match your hostname.
Read articleEmail Blacklists 101: How to Stay Off Them
Find out why domains get blacklisted and actionable tips to maintain a clean sender reputation.
Read articleThe Impact of Invalid Emails on Deliverability
Why cleaning your email list is not just about saving money—it's about saving your domain reputation.
Read articleSoft Bounce vs Hard Bounce: What's the Difference?
Understanding email bounce codes and when to remove a subscriber from your list.
Read articleWhat is Greylisting?
How greylisting fights spam by temporarily rejecting emails and what it means for your delivery times.
Read articleCommon SMTP Response Codes Decoded
A quick reference guide to 250, 451, 550, and other common SMTP server responses.
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