What click-through rate should a signature banner expect?

The common order of magnitude sits around 1 to 3% depending on the nature of the message and how relevant the targeting is. But that figure in isolation informs little: it is the comparison between your own campaigns that lets you decide.

How do we attribute a click to the right campaign?

By using a distinct destination URL per campaign, with tracking parameters. The tracking built into the signature tool provides counts per campaign and per team; UTM parameters let you find that traffic in your analytics tool.

Can the effect of a banner that is not clicked be measured?

Not directly. You can, however, observe indirect effects: a rise in brand searches, spontaneous mentions of an event during sales conversations, an increase in applications during a hiring campaign.

How do we compare this channel with a paid one?

Through equivalent media value: what buying the same number of qualified impressions would have cost. It is an order of magnitude for arbitration, not an accounting measure.

Measuring the ROI of a signature banner campaign

How to measure a signature campaign without picking the wrong indicator: exposure volume, attributed clicks, comparison between campaigns and equivalent media value.

A free channel still has to be measured — otherwise you know neither which message worked, nor what to schedule next quarter. But measuring a signature banner with display advertising reflexes leads to false conclusions.

Why click-through is not enough

A signature banner is not an insert people ignore: it appears under the message of a person the recipient is corresponding with. It is seen, often several times by the same correspondent over a conversation.

A customer who has seen “Vivatech — Hall 2, stand B34” thirty times without ever clicking knows perfectly well you will be there. The message got through. The click did not happen because there was nothing to do: they will see you on site.

Clicks therefore measure an action, not the transmission of the message. They remain useful — it is the only directly observable signal — provided you do not confuse them with effectiveness.

The three indicators to track

Exposure volume. The number of emails sent carrying the banner, by team and by period. It is the comparison base without which clicks mean nothing: two hundred clicks on a campaign broadcast by the whole company are not worth two hundred clicks on one broadcast by five salespeople.

Attributed clicks. By campaign, by team, by period. Attribution requires a distinct destination URL per campaign — that is the technical condition of any serious measurement.

Relative click-through. Clicks against exposure, compared with your other campaigns. It is the only figure that lets you arbitrate.

What relative comparison reveals

This is where measurement becomes useful. Over a quarter, you get a ranking:

Campaign	Exposure	Clicks	Rate
Trade show — book a meeting	14,000	380	2.7%
Annual report	52,000	610	1.2%
Hiring	48,000	290	0.6%
Satisfaction survey	6,500	210	3.2%

Three immediate lessons. Targeted, contextual campaigns — the trade show to sales correspondents, the survey right after a support exchange — clearly outperform. The hiring campaign, broadcast widely, has a low rate but a decent absolute volume: that is normal, its useful audience is a small fraction of the total. And the annual report, in the middle, confirms its place as a background campaign.

That ranking tells you what to repeat, what to target differently, what to drop.

Equivalent media value

To arbitrate this channel against others, an order of magnitude helps: what would buying the same volume of impressions from a comparable audience cost?

The calculation is rough and has to be owned as such:

Equivalent value = Impressions × reference CPM ÷ 1000

For 300,000 annual impressions and a reference B2B CPM of €15, you get €4,500 of media value — with no media buying, for the production cost of a few visuals.

It is not an accounting measure and it must not be presented as one: the impressions are not of the same nature. But as an arbitration argument in front of management comparing budget lines, the order of magnitude does its job. The channel’s real volume is detailed in email signature marketing.

The indirect effects, which you do not measure but do observe

Three signals deserve noting qualitatively, even if they cannot be quantified.

Spontaneous mentions. Customers who bring up the event in a sales conversation without having clicked. Ask the sales team, they notice.

Applications. A hiring campaign often produces more applications through internal word of mouth than through direct clicks.

Brand searches. A rise in searches for your name during a large campaign is observable in your analytics.

Worth knowing: add distinct UTM parameters to each campaign URL. The tool’s click count gives you the channel’s performance; UTMs let you follow what those visitors do next on your site, which is the only real conversion measure.

What to look at each quarter

Thirty minutes is enough. Take the table of the past quarter’s campaigns, rank them by relative rate, and ask three questions: which campaign to repeat as is, which to target better, which to drop.

That review feeds directly into the next quarter — the planning method is in planning your campaigns across a quarter.

And if the return-on-investment question is about the tool itself rather than the campaigns, that is a different calculation: the internal time saved, detailed in what manual management costs.