Broadcast campaigns performance: Compare metrics over time

The Compare metrics over time section on the Broadcast campaigns tab sits below the campaigns funnel. The performance overview at the top gives you a pinned snapshot of each KPI, whereas this section shows your up to eight chosen KPIs together on one chart, so you can see how they trend over time and how the current period compares with a previous one.

It uses the date ranges set in the date picker at the top of the page, and respects any campaign filter you’ve applied with Filter by campaigns.

Note: As with the rest of this tab, values are based on campaigns that started sending during your selected date range. Related events, e.g. orders and unsubscribes, are included even if they happened after that range ended.

Choosing your metrics

Select metrics to open the metric drawer. You can pick from the full list of email metrics, selecting them individually or all at once (up to eight metrics).

Use the search box to find a metric by name. Each metric in the drawer shows its current value and percentage change, so you can see which ones are worth pinning before you save the view. The counter at the top shows how many of your eight slots are used, and Deselect all clears your selection. Select Apply to update the cards and chart.

You can display up to eight metrics at a time. If selecting all metrics would take you past eight, Ometria adds metrics until you reach the limit.

Ometria remembers your selection, so your chosen metrics are still in place the next time you open the tab.

💡Tip: fewer metrics usually tells a clearer story. Two or three related metrics are much easier to read on the chart than eight. See Choosing which metrics to compare below.

For definitions of every metric, see: Broadcast campaign performance KPIs 

Reading the KPI cards

Each metric appears as a card showing its total for your selected date range, plus a percentage change against the comparison period set in the date range selector.

An infinity symbol on a card means the metric had no data in the comparison period, so a percentage change can’t be calculated. This can happen if you didn't send any broadcasts during the comparison period.

Each card’s colour matches its series on the chart below.

Reading the chart

The chart shows each selected metric over time, colour-coded to match its card. Solid lines and darker bars show the current period. Dashed lines and lighter bars show the comparison period, aligned point by point so you’re always comparing like with like, e.g. Jun 26 against May 26.

Metrics measured in different units are displayed on separate y-axes. Monetary values and counts use the left axis, and percentage rates use the right axis. This means you can compare metrics on very different scales, e.g. email revenue in the thousands against a conversion rate below 1%, and still see the shape of both.

Because broadcast campaigns are one-off sends rather than always-on flows, you’ll often see spikes on send days and quieter stretches in between. If the chart looks jagged when grouped by day, use View by on the section header to group by week or month and make the underlying trend easier to see.

Mouse over any point to see the exact current and comparison values for every metric at that point.

Choosing which metrics to compare

The most useful comparisons pair a volume metric with a rate or value metric, because volume tells you what you did and the rate tells you how well it worked. Some examples:

Note: Every metric you add shows two series on the chart, one for each period. With eight metrics selected, every metric you add shows two series on the chart, one for each period. With eight metrics selected, that’s 16 series, which makes trends hard to pick out. Compare metrics in small, related sets and swap them as your question changes.