SMS marketing in Denmark 2026: rules, costs and what actually works

SMS remains the highest-attention channel most Danish brands have access to: messages are read within minutes, and open rates dwarf email. But in Denmark the rules are strict, and the difference between a channel that compounds and one that gets you reported comes down to consent and restraint. Here's the 2026 playbook.

Consent: the one rule that isn't optional

The Danish Marketing Act (markedsføringsloven §10) requires prior, specific, informed consent before you send marketing by SMS. Two things trip people up:

• The email "existing customer" exception does not extend to SMS in the same way. Don't assume a soft opt-in from a purchase covers marketing texts — collect explicit consent for SMS specifically.
• Consent must be documented. Store when, where and for what the person opted in. If the Consumer Ombudsman asks, "we imported a list" is not an answer.

Every WeZend send passes a suppression check and honours opt-outs automatically, and consent is stored on the profile — but the legal responsibility for collecting it is yours. When in doubt, get a lawyer's read; this article is guidance, not legal advice.

What an SMS actually costs

Danish SMS is priced per message, and WeZend applies a country-level rate of 0.33 kr per SMS — below the general European rate because of direct Danish carrier routes. A few things worth knowing before you budget:

• A message longer than 160 GSM-7 characters splits into multiple segments, each billed separately. Emojis force Unicode encoding and cut the limit to 70 characters. Our SMS calculator shows the split live.
• On the included-quota plans, SMS draws on your plan's monthly volume first; overage is billed per message.

Run your real numbers through the pricing calculator before you commit to a plan.

The campaigns that earn their keep

SMS is expensive per message and precious in attention, so spend it where immediacy matters:

1. Transactional-adjacent — order confirmations, delivery updates, back-in-stock. Highest tolerance, highest relevance.
2. Time-boxed offers — a Saturday flash sale, a two-hour window. SMS's speed is the point.
3. Win-back with a real incentive — reserved for lapsed high-value customers, not the whole list.

What burns lists: daily blasts, vague "check out our new arrivals" texts, and sending outside reasonable hours. Set quiet hours and a frequency cap so a bad week can't torch your opt-in base.

Make it measurable

The point of a channel this expensive is that it pays back. Attribute revenue per campaign, and — for automations — hold out a small control group so you can prove the incremental lift, not just the sales that would have happened anyway. If you can't defend the number, you can't scale the spend.

Ready to try it? Start free — no credit card — and send a test to your own phone first.