Metrik.world
Subscription sign-ups
The subscription sign-ups metric tracks how many people, after viewing or reading content, took a specific action expressing interest in the brand – for example, subscribed to a newsletter, filled in a contact form, or registered for more information about a product or service. It expresses the level of the audience's active interest in the brand or its offering.
It is a conversion metric – the user performed the desired action.
alternative names
- subscription
- opt-in
- sign-up for information
related metrics
units
- Count
- % (ratio)
Additions, clarifications, extended definition
It is usually measured as the number or share of users who completed a registration form or clicked a CTA (call to action) such as "Learn more", "Register" or "Subscribe". It can also be tracked as a conversion rate.
In the context of brand campaigns, this metric shows whether the ad managed not only to capture attention but also to motivate the audience to take a first step towards the brand.
Interpretation
Results are usually expressed as the absolute number of sign-ups (e.g. 420 new subscriptions) or as a conversion rate, i.e. what percentage of visitors registered.
A high number of sign-ups or subscriptions suggests the ad was not only visible but also relevant and persuasive.
A low value may indicate, for example, an insufficiently clear call to action, weak landing page content, or a mismatch between the ad's message and what users expect after clicking.
To evaluate effectiveness, it is therefore useful to also track complementary indicators such as CTR, CPC, conversion rate or bounce rate – these help determine whether the problem arose in the ad or only after the click.
Watch out: limits and risks of distortion
- Not every subscription means genuine interest. Some sign-ups may be test entries, accidental, or motivated by a competition or discount.
- The quality of contacts matters more than their quantity – so it is worth tracking subsequent behaviour metrics as well (e.g. email opens, unsubscribes).
- The technical measurement setup (e.g. a missing conversion tag, a broken form, duplicate sign-ups) can distort the results.
- If the campaign targets different audiences, sign-ups need to be evaluated by segment (e.g. B2B vs B2C).
Where and how to measure
- Automatically via the conversion tools of ad platforms (e.g. Google Ads Conversion Tracking, Meta Pixel, LinkedIn Insight Tag), or via analytics systems (Google Analytics, etc.).
- For email campaigns, sign-ups are tracked directly in the subscription management tool (e.g. Mailchimp, Ecomail, HubSpot).
Formulas
conversion rate (%) = (number of sign-ups / number of page visits) × 100
cost per conversion (sign-up) = total campaign costs / number of sign-ups
Example from practice
A technology company launched a two-month online campaign promoting a new e-book on cybersecurity. Ads ran on LinkedIn and the Google Display Network with the call to action "Get the e-book for free – sign up for more information".
The campaign reached 160,000 users and drove 12,000 visits to the landing page. Of these, 480 people completed the form – a conversion rate of 4%. Total media costs came to EUR 2,400, so the CPL was EUR 5. Subsequent analysis showed that 60% of registered users actually downloaded the e-book and 15% opened the follow-up email offering a consultation. This confirmed that the sign-ups were of high quality and had a real communication impact – the campaign delivered not only awareness but also concrete relationships with prospects interested in the product.
