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Cold email and the law in the EU, Germany, the UK and the US

A 90-minute lesson comparing the rules for unsolicited business email under the GDPR, the ePrivacy Directive, Germany's UWG, the UK's PECR and the US CAN-SPAM Act, with eight fictional case cards, group work and a solution grid. An overview, not legal advice.

Lesson plan1 h 30 minBachelor +2CC BY 4.0

What you will learn

  • Tell data protection rules (GDPR) apart from rules on electronic marketing (ePrivacy, UWG, PECR, CAN-SPAM)
  • Name the lawful basis, the information duty and the right to object the GDPR sets for direct marketing
  • Compare consent-based (opt-in) and opt-out rules for email advertising
  • Apply the rules to fictional cases and justify a decision
  • Find the official source for each rule

Before you start: A first idea of what personal data is. The GDPR principles exercise is a good warm-up.

Before you start

This lesson gives an overview, not legal advice. It describes the rules as they stood on 1 November 2026 and simplifies them for teaching. Laws and court decisions change, and real cases often turn on details. Every section links the official text; a real company should ask a lawyer or its data protection officer. All companies, people and situations are invented.

Running the lesson

90 min
  1. 10 min

    Hook: show the email below. Ask: may Contoso send it? Collect gut answers for Germany, the UK and the US.

  2. 10 min

    Input: the two layers of rules (data protection and marketing rules), and opt-in against opt-out.

  3. 20 min

    Expert groups: four groups each study one fact sheet and prepare a two-minute explanation.

  4. 30 min

    Mixed groups (one expert from each fact sheet) solve the eight case cards on the solution grid.

  5. 15 min

    Compare with the model grid. Discuss the cases where groups disagreed.

  6. 5 min

    Exit ticket: one rule that is the same in all four systems, and one that differs.

Materials

  • The hook email (below), projected.

  • The four fact sheets, one per expert group: GDPR, ePrivacy and Germany, UK, US.

  • The eight case cards, cut out or projected, and one empty solution grid per mixed group.

  • Optional: devices to open the official sources.

Step by step

1. Hook (10 minutes)

Jonas Klein

jonas.klein@contoso.example

Quick question about your warehouses

Hello Ms Berger, I saw on your website that Northwind runs three warehouses. We help logistics teams cut picking errors with a simple scanning setup. Would a 15-minute call next week be useful? Best regards, Jonas Klein Contoso

Contoso and Northwind have never been in touch. Ask for a quick vote in three versions: both companies are in Germany; both are in the UK and Northwind is a limited company; both are in the US. Keep the votes on the board.

2. Input: two layers of rules (10 minutes)

Explain on the board:

  • Layer 1: data protection. Who may use personal data, and how. In the EU this is the GDPR; the UK has its own UK GDPR. A named work address such as anna.berger@northwind.example is personal data, because it identifies a person. A general address such as info@northwind.example often is not.

  • Layer 2: marketing rules. When advertising by email is allowed at all. In the EU these come from the ePrivacy Directive, written into each country's own law (in Germany the UWG). The UK has PECR, the US has CAN-SPAM.

  • A cold email has to pass both layers wherever both apply.

  • Opt-in means: you need permission (consent) before the first advertising email. Opt-out means: you may send, but must stop when asked.

3. Expert groups (20 minutes)

Each group reads one fact sheet, checks the official source and prepares a two-minute summary: what does the rule cover, does it need consent, what must every email contain?

Fact sheet 1: GDPR (EU)

Source: Regulation (EU) 2016/679 on EUR-Lex.

  • Lawful basis (Article 6(1)). Personal data may only be used on one of the listed grounds. For marketing these are usually consent (point a) or legitimate interests (point f). Recital 47 says direct marketing may be a legitimate interest, but only if the person's interests and rights do not outweigh it. The company has to weigh this and should write the weighing down.

  • Information duty (Article 14). When the data did not come from the person, the company must tell them who it is, why it uses the data, on which legal basis, what kind of data, where the data came from, how long it is kept and which rights they have. If the data is used to contact the person, this must happen at the latest with the first message.

  • Right to object (Article 21). People can object to direct marketing at any time (21(2)). After an objection, their data may no longer be used for marketing (21(3)). The right must be pointed out explicitly, clearly and separately from other information, at the latest in the first message (21(4)).

  • Consent must be provable (Article 7(1)). A company that relies on consent must be able to show it.

Fact sheet 2: ePrivacy Directive (EU) and the UWG (Germany)

Sources: Directive 2002/58/EC on EUR-Lex and § 7 UWG on gesetze-im-internet.de.

  • Article 13(1) ePrivacy: email for direct marketing is only allowed with prior consent.

  • Article 13(2), the existing customer exception (often called "soft opt-in"): a company that got a customer's email address when selling them something may advertise its own similar products, if the customer could object easily and free of charge when the address was collected and can do so in every message.

  • Article 13(5): the consent rule covers people (natural persons). For companies and other legal persons, each country must make sure their interests are "sufficiently protected". That is why the rules for email to companies differ from country to country.

  • Article 13(4): hiding the sender's identity, or giving no valid address to stop the messages, is never allowed.

  • Germany, § 7(2) No. 2 UWG: advertising by email without the prior express consent of the addressee is always an unreasonable nuisance. The law does not distinguish between consumers and businesses here, so in Germany cold advertising emails to businesses generally need prior express consent too. Compare phone calls: for calls to businesses, § 7(2) No. 1 only needs at least presumed consent.

  • § 7(2) No. 3 UWG: advertising that hides the sender's identity or has no valid address for a stop request is always unlawful.

  • § 7(3) UWG: the existing customer exception, with four conditions: the address came from a sale, the advertising is for the company's own similar goods or services, the customer has not objected, and the customer was told clearly, when the address was collected and in every email, that they can object at any time without extra cost.

  • German courts read "advertising" broadly. Breaches are mostly pursued in civil courts, for example through formal warnings (Abmahnungen) from competitors or associations, or claims by the recipient. The GDPR applies in addition.

Fact sheet 3: PECR and UK GDPR (United Kingdom)

Sources: regulation 22 of PECR on legislation.gov.uk and the ICO's guidance on business-to-business marketing.

  • Regulation 22 covers email marketing to individual subscribers: private people, sole traders and some partnerships. They need to have given consent, unless the soft opt-in applies (22(3): details obtained in a sale or negotiation, own similar products, a simple way to refuse at collection and in every message). Since 5 February 2026, charities have a similar exception (22(3A)), added by the Data (Use and Access) Act 2025.

  • Corporate subscribers (companies, limited liability partnerships, Scottish partnerships and some government bodies) are not covered by regulation 22, so email marketing to them does not need consent under PECR.

  • Regulation 23 applies to all marketing emails: the sender's identity must not be hidden, and there must be a valid address to ask for the messages to stop. The ICO advises honouring opt-outs from companies too.

  • UK GDPR still applies when a person can be identified, for example a named employee's address: lawful basis, information and the right to object.

  • If you cannot tell whether a contact is a sole trader or a company, the ICO says to treat them as an individual subscriber.

Fact sheet 4: CAN-SPAM (United States)

Source: the FTC's CAN-SPAM Act compliance guide for business.

  • Opt-out model: no prior consent is needed for commercial email. There is no exception for business-to-business email: the rules apply to all of it.

  • Every commercial email must: use honest header information (From, To, Reply-To, routing); have a subject line that is not deceptive; be identified as an advertisement; contain a valid physical postal address; explain clearly how to opt out.

  • Opt-outs must be honoured within 10 business days, and the opt-out must keep working for at least 30 days after sending. It may not cost anything or require more than an email address, a reply or one web page. Opted-out addresses may not be sold or passed on.

  • Responsibility stays with the company whose product is advertised, even if another firm sends the emails.

  • Penalties: the FTC's guide lists up to $53,088 for each email in violation (adjusted for inflation over time).

4. Case cards (30 minutes)

Mixed groups solve each card: which rules apply, is it allowed, and what is needed or missing?

  1. Contoso GmbH, Berlin, wants to email the purchasing managers of 300 German manufacturing companies. It found the named addresses on the companies' websites. Nobody has been in touch before.

  2. Fabrikam Ltd, Manchester, emails the general info@ address of 200 UK limited companies with an offer for office chairs. The emails name Fabrikam and contain an unsubscribe link.

  3. Fabrikam Ltd also wants to email a self-employed plumber (a sole trader) at his business address. They have never been in contact.

  4. Northwind Traders Inc., Seattle, emails 500 purchasing managers at US companies. The emails have the subject line "Re: your order" although nobody ordered anything, and no postal address.

  5. Coho Winery, Germany, sold wine to a customer in its online shop in June. At checkout the customer was told that she could object to advertising emails at any time. Coho now wants to email her about its new red wines.

  6. Litware, a software company in an EU country whose national rules (assume this for the case) allow advertising emails to company addresses without consent, wants to email named managers at other companies. Which GDPR duties remain?

  7. Tailspin Toys, an EU company, wants to buy a list of 5,000 "B2B contacts with consent" for 400 euros. The seller says the list is "fully GDPR compliant".

  8. Wide World Importers, UK, receives a reply from a contact: "Please stop emailing me." A salesperson suggests deleting everything about her from the CRM so she is "forgotten".

Case

Rules that apply

Allowed?

Needed or missing

1

2

3

4

5

6

7

8

5. Compare and discuss (15 minutes)

Groups compare their grid with the model grid. Spend most of the time on the cases where groups disagreed, usually 2, 6 and 7. Then return to the votes from the hook.

Model solution grid

Case

Rules that apply

Allowed?

Needed or missing

1 Contoso, Germany

§ 7(2) No. 2 UWG, GDPR

No, not without prior express consent

Consent of each addressee before the first advertising email. The existing customer exception does not apply. Other ways in, such as meeting people at a trade fair and asking for consent, are possible.

2 Fabrikam, UK companies

PECR reg. 23; UK GDPR only where a person is identifiable

Yes, with conditions

Corporate subscribers need no consent under reg. 22. Identity and a valid opt-out address are required; opt-outs should be honoured.

3 Fabrikam, sole trader

PECR reg. 22, UK GDPR

No, not without consent

A sole trader is an individual subscriber. No earlier sale or negotiation, so no soft opt-in.

4 Northwind, US

CAN-SPAM

No, not as it stands

No consent needed, but the subject line is deceptive and the postal address is missing. Also needed: ad identified, opt-out, honoured within 10 business days.

5 Coho Winery

§ 7(3) UWG, GDPR

Yes, if all four conditions hold

Address from a sale, own similar products (wine), no objection so far, and a clear objection notice in every email.

6 Litware

GDPR Art. 6(1)(f), 14, 21

Possibly, depending on the national rule and the balancing test

A documented legitimate interest weighing; Article 14 information with the first email, including the source of the data; the right to object stated explicitly and separately; stop at once after an objection.

7 Tailspin Toys

GDPR Art. 7(1), 14; national ePrivacy rules

Very risky; do not use it unchecked

Consent must be given to Tailspin specifically and be provable for each contact. Tailspin must name the source. Bought lists also bring bounces and spam traps.

8 Wide World Importers

UK GDPR Art. 21(3), PECR

Stop at once

Stop all marketing to her. Keep a minimal entry on a suppression list, so she is not added again from another source; deleting everything makes a new contact more likely.

What to say about the hook email
  • Germany: not allowed without Anna Berger's prior express consent (§ 7(2) No. 2 UWG). As written it also lacks the GDPR information and the notice of the right to object.

  • UK, Northwind is a limited company: PECR does not require consent for a corporate subscriber, but Anna Berger is a named person, so UK GDPR applies: a lawful basis (usually legitimate interests), information about the processing and the right to object. Contoso must not hide its identity and must give a valid address for opt-outs.

  • US: consent is not needed, but as written the email lacks a postal address, an opt-out and a clear note that it is an advertisement.

6. Exit ticket (5 minutes)

Each learner writes one rule that is the same in all four systems and one that differs.

Model answers for the exit ticket
  • The same everywhere: the sender may not hide who they are, and recipients must have a working way to stop the emails.

  • Different: whether consent is needed before the first advertising email to a business: in Germany generally yes; in the UK not for corporate subscribers but yes for sole traders; in the US no.

Differentiation

  • Easier: compare only Germany and the US with cases 1, 4 and 5. Give learners this decision path: Is it advertising? Is the recipient a person or a company? Which country's rules apply? Is there consent or an existing customer relationship? Does every email say who sends it and how to stop?

  • Harder: write the Article 14 information text for case 6 in plain language, in no more than 120 words. Or research how a second EU country of your choice protects companies under Article 13(5) and compare it with Germany, naming the official source.

Homework

Rewrite the hook email for the US version so that it meets CAN-SPAM, and add a short paragraph that would give the GDPR information and the notice of the right to object if Anna Berger were in the EU.

What a good homework answer contains
  • An honest subject line and the real sender name.

  • A clear note that the email is an advertisement or a business offer.

  • Contoso's postal address.

  • A simple opt-out, for example "Reply 'stop' and we will not email you again", honoured within 10 business days.

  • For the EU paragraph: who Contoso is, why it uses her address, where it found it (Northwind's website), the legal basis (legitimate interests), how long the data is kept, a link to the full privacy notice, and on its own line: "You can object to emails like this at any time by replying 'stop'."

  • A note that in Germany the email would still need her prior consent.

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"Cold email and the law in the EU, Germany, the UK and the US" by ManyPI (https://manypi.com/edu/cold-email-and-the-law-lesson), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)