Why Email Marketing Needs Fewer Subscribers

I recently read Acoustic's 2026 email marketing benchmark report and one point really stood out: email click-through rates in North America have been hovering around 1%, while regions operating under stricter privacy regulations, such as GDPR, are seeing stronger engagement — around 2.5%.

After working for two years mainly on email campaigns and newsletters, it makes complete sense to me. So what can you do today to improve your email CTRs?

The truth is that a lot of people sign up for emails and never actually read them. Some subscribed once for a discount, others no longer need the content, or never meant to subscribe in the first place. When those contacts stay on your list, they don’t just lower engagement metrics, they also hurt the algorithms: deliverability, sender reputation, and the overall quality of your audience.

Under GDPR, marketers are encouraged to follow practices that prioritize clear consent, transparency and subscriber list quality. While double opt-in is not always legally required across every GDPR jurisdiction in North America, it is a best practice because it confirms that the subscriber genuinely wants to hear from you. It also helps reduce fake, mistyped, or low-intent email addresses.

Other strong list-health practices include removing inactive contacts during regular list purges, excluding addresses that have previously bounced, and running segmentation and re-engagement campaigns semi-regularly. These tactics may shrink your list, but they usually leave you with a more engaged audience.

In North America, CAN-SPAM takes a more opt-out-based approach. It does not require prior consent in the same way GDPR or CASL often do, but it does require marketers to be transparent. Commercial emails need accurate header information, honest subject lines, a clear way to unsubscribe, a valid physical postal address, and opt-out requests must be honoured promptly.

In Canada, CASL is stricter. For commercial electronic messages, organizations generally need consent, must clearly identify themselves, and must include a working unsubscribe mechanism. The CRTC summarizes CASL’s three main requirements as: obtain consent, provide identification information, and provide a clear unsubscribe mechanism.

The takeaway is simple: compliance to these practices comes down to:

1. Ensuring subscribers are interested in your emails.

2. Data lists are cleaned consistently.

3. Re-engagement campaigns are ran regularly.

   
   

A smaller list of people who actually want to hear from you is far more valuable than a large list of people who ignore you.

In 2026, the strongest email programs will not be the ones chasing the biggest lists. They’ll be the ones building the cleanest, most intentional, and most engaged audiences.