Email Marketing Compliance:
CAN-SPAM, CASL & GDPR
A complete guide to email marketing laws in the US, Canada, and Europe — what each requires, how they compare, and how BouncePro keeps you compliant automatically.
01 Why Email Compliance Matters
Email marketing is one of the most powerful channels for reaching customers — but it operates within a strict legal framework. Three laws govern the majority of commercial email sent in North America and Europe: CAN-SPAM (United States), CASL (Canada), and GDPR (European Union).
Violating these laws isn't just a legal risk — it damages your sender reputation, destroys subscriber trust, and can result in your emails being blocked entirely. The penalties are severe:
- CAN-SPAM: Up to $51,744 per individual email violation
- CASL: Up to $10,000,000 CAD per violation for businesses
- GDPR: Up to €20,000,000 or 4% of global annual revenue
02 CAN-SPAM Act (United States)
The CAN-SPAM Act (2003) governs all commercial email sent to US recipients. Unlike CASL and GDPR, CAN-SPAM is an opt-out law — you don't need prior consent to send commercial email, but you must honor opt-out requests and follow strict formatting rules.
Key Requirements
- Your "From" name and email address must accurately identify your business
- Subject lines must not be deceptive or misleading
- You must clearly identify the message as an advertisement
- Include a valid physical postal address in every email
- Include a clear, easy-to-use unsubscribe mechanism
- Honor opt-out requests within 10 business days
- Never sell or transfer opted-out addresses to another sender
For the full legal breakdown, see our CAN-SPAM Policy page or our guide on email unsubscribe compliance.
03 CASL (Canada)
Canada's Anti-Spam Legislation (CASL) is one of the world's strictest email laws. Unlike CAN-SPAM, CASL is an opt-in law — you must obtain valid consent before sending any commercial electronic message to a Canadian email address.
Express vs. Implied Consent
- Express consent — subscriber explicitly opted in (e.g. checked an unchecked box). Does not expire.
- Implied consent — existing business relationship (2-year window) or public inquiry (6-month window)
Key Requirements
- Obtain and record consent before sending — pre-checked boxes are not valid
- Identify yourself clearly as the sender in every message
- Include a working unsubscribe mechanism in every message
- Process unsubscribe requests within 10 business days
- Maintain consent records indefinitely
See our full CASL Compliance guide and opt-in best practices for more detail.
04 GDPR (European Union)
The General Data Protection Regulation (GDPR) applies when you send email to residents of the European Union — regardless of where your business is located. Like CASL, GDPR requires explicit consent before sending marketing emails.
Key Requirements for Email Marketing
- Lawful basis: For marketing email, consent is the required legal basis under GDPR
- Explicit consent: Must be freely given, specific, informed, and unambiguous — pre-ticked boxes are invalid
- Right to withdraw: Subscribers must be able to withdraw consent at any time, easily
- Data minimization: Only collect the personal data you actually need
- Right to access: Subscribers can request a copy of their data
- Right to erasure: Subscribers can request deletion of their data ("right to be forgotten")
- Data retention: Don't keep personal data longer than necessary
Consent Records Under GDPR
GDPR requires you to document how and when consent was obtained. You must be able to demonstrate that consent was valid if challenged by a regulator. BouncePro records consent timestamps and source for every subscriber automatically.
05 Side-by-Side Comparison
Here's how CAN-SPAM, CASL, and GDPR compare on the most important requirements:
| Requirement | CAN-SPAM (US) | CASL (Canada) | GDPR (EU) |
|---|---|---|---|
| Prior consent required? | No (opt-out) | Yes (opt-in) | Yes (explicit) |
| Consent type | N/A | Express or implied | Explicit only |
| Pre-ticked boxes valid? | N/A | No | No |
| Unsubscribe required? | Yes | Yes | Yes |
| Unsubscribe deadline | 10 business days | 10 business days | Without undue delay |
| Physical address required? | Yes | Yes | No (but name required) |
| Consent records required? | No | Yes | Yes |
| Right to data deletion? | No | No | Yes |
| Max penalty (business) | $51,744/email | $10M CAD/violation | €20M or 4% revenue |
06 How BouncePro Keeps You Compliant
BouncePro automates the compliance requirements that every sender must meet — so you can focus on your campaigns, not the law.
- Automatic unsubscribe links — included in every email, one-click, functional for 60+ days
- Suppression list management — unsubscribes and bounces are blocked from future sends automatically
- Consent timestamp recording — every subscriber's opt-in date, source, and method is logged
- Implied consent expiry alerts — CASL's 2-year and 6-month windows are tracked and flagged
- Sender identification — your business name and address appear in every email footer
- Double opt-in support — optional confirmed opt-in for bulletproof GDPR and CASL consent records
- DKIM / SPF / DMARC — authentication to prove your identity to receiving mail servers
Compliance Built Into Every Send
BouncePro automates CAN-SPAM, CASL, and GDPR requirements so you're protected on every campaign.
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