Shared IP vs Dedicated IP: Which One Your Sending Volume Actually Needs

Senders below the volume threshold who pay for a dedicated IP often see worse deliverability than they would on a shared pool. Here is the real decision framework.

Migrating Your Email Platform Without Losing Your Deliverability

Meta description A switch of ESP, a rebrand, or an acquisition resets your sending reputation in the eyes of inbox providers, even with an engaged list. Here is what to plan for, and why the speci...

SPF, DKIM, and DMARC: The Non-Technical Guide for Marketing Teams

What SPF, DKIM, and DMARC actually do, in plain language, and why they're no longer optional for anyone sending marketing email.

The Pre-Send Deliverability Checklist

Most deliverability damage is preventable. This is the practical pre-send checklist for high-stakes campaigns: segment, authentication, content, and warning sign checks

How Inbox Filtering Actually Works in 2026

A plain-language guide to how Gmail, Outlook, and Apple Mail route emails inside the inbox in 2026, what each provider weighs heaviest, and how to influence those signals

Email Deliverability Is a List Quality Problem in Disguise

Most deliverability problems are diagnosed as technical and treated with technical fixes. The root cause is almost always upstream, in the quality of the list

Big email file size, big problems

Large email files cause slow rendering, spam filter problems, and Gmail clipping. Here's what email file size actually means and how to keep your campaigns lean and landing.

Why Email Lists Go Quiet: The Disengagement Timeline

Most lists see a sharp engagement drop between months two and four. Here is what drives each stage of disengagement and what the early warning signs look like in your data.

The conversation your subscribers are already having with you

Your subscribers are telling you what they think of your emails. They're just not using words. Here's how to read what they're saying and what to do about it.