Show every subscriber exactly the right image

Add your ESP’s city merge tag to the image URL as geo_city, and region and country as geo_region and geo_country if you have them; the embed code has a slot for each. Location rules, and weather and temperature, then work in mail clients that hide the reader behind an image proxy.

The default variation is shown. Every subscriber gets an image; nobody sees a broken one.

It renders anywhere images render: each dynamic image is an ordinary image tag, with no script and nothing for a client to block beyond images themselves. Most mail clients load images through their own proxies, which hides the reader’s location and device, so pass city and device from your ESP for those rules. Weather and temperature follow the city too: a city your ESP passes is enough, a country alone is not. Time rules and your own merge tags work everywhere.

No. The image resolves each time the email is opened, so updating a variation or a rule changes what readers see in mail that has already landed.

Usually from your ESP’s merge tags, so each subscriber gets their own: a booking, a renewal, a delivery window. The calendar reads ISO dates like 2026-10-14, numeric dates month-first or day-first (you say which your ESP sends), written dates like Oct 14, 2026, and Unix timestamps. You can also pick fixed dates that everyone sees, like a sale weekend. It shows the month of the reader’s next date by default, or the month they open the email, the one after, or a month you choose. Up to five kinds of date can each have their own marker, with a legend under the calendar.

Yes. A chart layer draws a progress bar, a gauge, a pie or doughnut, bars, columns, a line or an area. Its numbers usually come from merge tags, so each reader sees their own: points toward a reward, a fundraising total, their activity by month. When a reader’s tag is empty, you choose whether the chart is left out, shows a fallback value or shows zero. Numbers can arrive as 1250, 1,250, $12.99, 45% or “1,250 points”, with a comma decimal mark if your platform writes 1.250,50. Colors, any Google Font and a $ or “pts” around every number match it to the email.

People who clicked the image, each once, or people who opened it when your embed carries your ESP’s subscriber ID. It counts clicks, not purchases or sign-ups, so word the line to match: “1,501 people are loving this”, not “1,501 people bought this”. It prints the full number or the short one (1.5K). Sign-ups you counted elsewhere can be added to the number readers see; that’s never added to the real count, and the minimum goes by the real count.