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DMARC Policy ExplainedDMARC Policy Explained
Daniel Nwankwo

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DMARC Policy Explained

A DMARC policy tells receiving mail servers how to handle emails that fail SPF and DKIM authentication. The three options are p=none (monitor only), p=quarantine (send to spam), and p=reject (block entirely). Gmail and Yahoo now require DMARC for bulk senders.

DMARCEmail DeliverabilityBest Practices
How to Add a Logo to EmailsHow to Add a Logo to Emails
Othman Katim

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How to Add a Logo to Emails

Adding your brand logo to emails requires BIMI (Brand Indicators for Message Identification), which displays a verified logo next to your messages in recipient inboxes. Setup requires DMARC enforcement, an SVG Tiny PS logo file, and for Gmail a Verified Mark Certificate.

BIMIDMARCEmail Deliverability
What Is IMAP and How Does It WorkWhat Is IMAP and How Does It Work
Daniel Nwankwo

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What Is IMAP and How Does It Work

IMAP is the protocol that syncs your email across every device you use. Unlike POP3, it keeps messages on the server and mirrors your inbox, sent folder, and read status in real time. Understanding how it works explains most email sync issues and connects directly to how engagement signals affect deliverability.

IMAPSPFDMARCDKIMSMTPIP
Why Your Domain Gets BlacklistedWhy Your Domain Gets Blacklisted
Thami Benjelloun

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Why Your Domain Gets Blacklisted

A domain gets blacklisted when monitoring organizations flag it for sending patterns that resemble spam. High bounce rates, shared IP contamination, volume spikes, and domain spoofing can all trigger a listing, even for legitimate senders. Most email platforms won't alert you when it happens.

IPEmail Deliverability
How To Fix SPF ErrorsHow To Fix SPF Errors
Thami Benjelloun

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How To Fix SPF Errors

SPF errors occur when your domain's SPF record is misconfigured, exceeds the 10 DNS lookup limit, or contains syntax issues. DMARC treats SPF PermError as a fail, which means your emails get filtered or rejected regardless of content quality.

SPFEmail DeliverabilityBest Practices
How to Fix SMTP ErrorsHow to Fix SMTP Errors
Othman Katim

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How to Fix SMTP Errors

SMTP errors are response codes that tell you exactly what went wrong when an email fails to deliver. A 550 means the address doesn't exist. A 554 means the server rejected your message. Understanding these codes is the fastest way to diagnose deliverability problems at their source.

SMTPBest PracticesEmail Deliverability