Widgets
Gauge charts in email, live at every open.
A semicircular gauge with a needle and tick marks — for scores, usage, quota attainment, anything with a current value and a target. DynaMail renders it as an image at the moment of open, so the needle points at the number that's true right now, not the one from send time.
A real render produced by DynaMail’s image pipeline.
Free while in beta · No credit card required
How it works
Every DynaMail widget is a plain image URL. Design it in the dashboard, then paste the URL into an <img> tag — or your email editor’s image block — like this:
Example embed snippet
<img src="https://img.dynamail.io/widgets/YOUR-WIDGET-ID/render.png?current=72&target=100" width="300" height="200" alt="" />YOUR-WIDGET-ID is a placeholder — every widget you create gets its own id. The file extension requests the output format — gif, apng, webp, or png. Depending on the design, an animated widget may be served in an animated format even when a static extension is requested.
Because the image is rendered when the email is opened — not when it’s sent — each open shows the current state (renders are cached for at most a minute). No script, no custom HTML, nothing for your email platform to strip out.
What it’s for
- Account usage — show customers how much of their plan they have used
- Score recaps — NPS, health scores, or performance ratings at a glance
- Sales and quota emails — attainment against target, per rep
- Fitness and habit digests — weekly effort against a personal goal
Personalize it in the URL
The data behind the widget — its values, chart points, and text placeholders — can come from the URL. Append query parameters, or your email platform’s merge tags, and each recipient’s open renders from their own data.
?current=…The value the needle points at (required) — merge-tag friendly?target=…The maximum the gauge sweeps toward (required)?v_name=…Override any {v_name} text placeholder in your designFrequently asked questions
How do I put a gauge chart in an email?
Design the gauge in the DynaMail dashboard, then paste its image URL into an <img> tag. It behaves like any other image in your template — no code, no plugin, works in any email service provider.
What can the gauge show?
Any current value against a target: plan usage, an NPS or health score, quota attainment, a rating. The needle position is computed from the numbers at render time, so it is current at every open.
Can the needle be personalized per recipient?
Yes. Pass ?current= and ?target= in the image URL using your email platform's merge tags, and each recipient sees a gauge rendered from their own numbers.
Will it render in Outlook?
Yes — the widget is a standard image, so it displays wherever images do. The URL extension requests the format (render.gif, render.png, render.webp, render.apng); depending on the design, an animated widget may be served in a compatible animated format even when a static extension is requested. Classic Outlook for Windows freezes animations on their first frame, so a gauge design without an intro animation is the safest choice there.
More widgets for email
Email progress bars, live at every open.
Add a live progress bar to any email as a plain image URL. It renders fresh at every open and personalizes per recipient. No code. Free while in beta.
Sparklines in email, drawn fresh at every open.
Embed a live sparkline chart in any email as a plain image URL. Trend data renders fresh at every open and can be overridden per recipient. Free while in beta.
Email countdown timers, accurate at every open.
Add a live countdown timer to any email as a plain image URL. Every open renders the true time remaining, in any timezone, per recipient. Free while in beta.
Every widget type is included on the free beta plan — see pricing.