Ten practical guides for Email Marketers — one per criterion that decides whether an email is delivered, read and acted on. Each explains why it matters, how to measure it, the thresholds to aim for and the mistakes to avoid, in marketer terms.
An email can fail at three different moments. The guides follow that journey, so you can start where your campaigns are most exposed.
Will mailbox providers trust the email enough to deliver it?
Once delivered, does it display complete and fast — and can every recipient read it, images on or off?
In the first seconds, does attention land on what matters — and is the screen easy to grasp?
The Infrastructure checks mailbox providers run before anyone sees your work. Invisible to recipients, decisive for delivery.
The Composition checks: whether the email displays complete and fast, and whether its message survives blocked images, small screens and bright light.
Your recipients discover the email cold and decide in seconds. The Eye Tracking guides show how attention and clarity shape that first impression.
The benchmark for each criterion, as detailed in its guide.
Each guide stands on its own. In practice, the criteria interact: a heavy email loads slowly, a full-image email fails both filters and readers, a clear screen still needs its CTA in the right place.
Inbox Maestro checks them together on the email your platform actually sends — Infrastructure and Composition checkups, attention and clarity analyses — and turns the results into prioritized, marketer-facing recommendations, before the campaign goes out.
Send a test email. Receive a structured analysis. Improve the campaign before launch.
Get Your Email Checkup →