CAN-SPAM Act: The Federal Baseline

The CAN-SPAM Act of 2003 is a federal law that set new requirements for commercial email messages, designed to regulate commercial email and curb unwanted spam. Enforced by the Federal Trade Commission (FTC), this legislation aimed to curb spam and unsolicited content in email communications, applying to all commercial electronic mail messages sent to recipients within the United States.

Despite its name, the CAN-SPAM Act does not apply just to bulk email. It covers all commercial messages, which the law defines as "any electronic mail message the primary purpose of which is the commercial advertisement or promotion of a commercial product or service," including email that promotes content on commercial websites. The law makes no exception for business-to-business email, meaning all email, including a message to former customers announcing a new product line, must comply.

What CAN-SPAM Actually Requires

The FTC sets eight core requirements to keep marketing emails compliant. Your "From," "To," and "Reply-to" fields must accurately identify your real identity. Avoid false or misleading header information, misleading names, or spoofed addresses. Subject lines must be honest; don't use deceptive subject lines. Subject lines must match the content.

Beyond honest headers and subject lines, CAN-SPAM requires:

• A valid postal address for the sender in every commercial email. This requirement helps establish transparency and trust, allowing recipients to contact the sender if necessary.
• A clear opt-out mechanism in every commercial email, allowing recipients to unsubscribe easily. The Act mandates prompt action on opt-out requests, requiring companies to remove unsubscribed recipients from their lists within ten business days.
• Once people have told you they do not want to receive more messages from you, you cannot sell or transfer their email addresses, even in the form of a mailing list.

One common misconception: CAN-SPAM does not require email senders to get permission before they send marketing messages. It is an opt-out law, not an opt-in law. That distinction matters when comparing it to California's state law and CASL.

Who Is Responsible?

Even if you hire another company to handle your email marketing, you cannot contract away your legal responsibility to comply with the law. Both the company whose product is promoted in the message and the company that actually sends the message may be held legally responsible.

California Business and Professions Code § 17529: The State Anti-Spam Law

California's own anti-spam law predates the CCPA and operates independently of it. Enacted to curb deceptive online advertising, Business and Professions Code § 17529.5 prohibits unsolicited commercial emails containing false or misleading information, particularly those sent from or to people in California.

Companies that rely on email marketing are facing increased scrutiny as plaintiffs' firms file a surge of class action lawsuits alleging violations of California's Anti-Spam Law under § 17529.5. These actions target companies across the United States that send marketing or promotional emails to California residents, regardless of where the sender is located.

What § 17529.5 Prohibits

It is unlawful for any person or entity to advertise in a commercial email sent from California or sent to a California electronic mail address if the email advertisement contains or is accompanied by a third-party's domain name without the permission of the third party. The statute also prohibits falsified header information and misleading subject lines.

The exposure under this law is significant. With strict liability and liquidated damages up to $1,000 per email, and no intent or actual harm required, even modest campaigns can lead to multimillion-dollar exposure.

Under this strict liability theory, any company that benefits from a commercial email may be held liable, regardless of whether the message was sent directly by the company or by a third-party vendor or affiliate. This significantly increases potential exposure because the statute authorizes liquidated damages of $1,000 per unsolicited commercial email per recipient, which could result in multimillion-dollar liability in class actions involving large marketing lists.

To reduce exposure, if your company uses outside vendors, affiliates, or marketing partners, incorporate strong contractual protections requiring them to comply with applicable anti-spam laws, and conduct appropriate oversight. Preserve records of compliance efforts, including training, audits, technical safeguards, and compliance protocols, to demonstrate due care if challenged in litigation.

CCPA and CPRA: Data Privacy Rules for Email Marketers

The CCPA and its 2023 update, the CPRA, form the privacy backbone of California email marketing law. The California Consumer Privacy Act is a state-wide data protection law regulating how businesses handle personal information. It gives California residents the right to know what personal information companies collect, use, and share about them.

In November 2020, California voters approved Proposition 24, the CPRA, which amended the CCPA and added new additional privacy protections that began on January 1, 2023. As of that date, consumers gained new rights including the right to correct inaccurate personal information and the right to limit the use and disclosure of sensitive personal information.

Does the CCPA Apply to Your Business?

Not every business that emails California residents falls under CCPA. The law applies if your annual gross revenues are over $25 million, your company buys, receives, or sells the personal information of 100,000 or more California residents, or you derive 50% or more of annual revenues from selling California residents' personal information.

Critically for email marketers: the grace period for B2B communications ended on January 1, 2022. If you run B2B email campaigns targeting California-based businesses, you now need to comply with CCPA requirements, including honoring data breach notifications and "do not sell" requests.

Under the CCPA, an email address is considered personal information. That means you must inform users at the point of collection what data you're collecting and how it will be used, offer a clear opt-out option if you sell or share that information, include a "Do Not Sell My Personal Information" link on your site if applicable, and provide consumers with access to their data upon request, and delete it if they ask.

CCPA Consumer Rights That Affect Email Programs

The CCPA grants five core rights relevant to email: the Right to Know (consumers can request access to data collected about them), the Right to Delete (businesses must delete personal data upon request), the Right to Opt-Out (clear "Do Not Sell My Information" links are required), the Right to Correct (consumers can request data corrections), and the Right to Non-Discrimination (no penalties for exercising privacy rights).

For your email operations, two response deadlines matter most: you have 45 days to respond to access or deletion requests and 15 business days to process opt-outs.

For a well-segmented list where subscriber data is organized by preference and behavior, honoring these requests becomes much simpler. Learn how to build that kind of structure in our guide on Email List Segmentation Strategies That Boost ROI by 760%.

CASL: What It Means If You Have Canadian Subscribers

If any subscribers access your emails from Canada, CASL applies to you regardless of where your business is based.

The Canadian Anti-Spam Law (CASL) went into effect July 1, 2014. If you're in Canada or send a commercial electronic message (CEM) to Canadian residents, you need to comply with CASL.

Commercial electronic messages sent to recipients in Canada from another country must comply with CASL. Senders of CEMs need to: obtain consent, provide identification information, and provide an unsubscribe mechanism.

The Key Difference: Opt-In vs. Opt-Out

CASL flips the CAN-SPAM model entirely. CASL primarily relies on explicit consent, meaning that anyone you message must opt into that channel, with a few exceptions. You must also keep a record of all consents obtained under CASL, including when and how consent was obtained.

Express consent means that a person has clearly agreed to receive a CEM, either in writing or orally. The recipient must take a proactive action to indicate their express consent, for example, by signing up at your website.

Implied consent is available in limited cases. Examples include if a recipient purchased a product or service from you, accepted a business deal with you, or entered into a written contract with you, all within the past two years, or if they inquired about a product or service from you in the past six months.

No matter what type of consent you have, if a recipient asks to stop receiving CEMs through your unsubscribe mechanism or by another form of communication, you must respect their request and stop sending them CEMs within 10 business days.

CASL Penalties

The financial stakes under CASL are substantial. Fines for violating CASL can be up to $1 million per violation for individuals and up to $10 million per violation for businesses. Both individuals and businesses, including their directors, officers, and other agents, can be liable for violations.

Building a Compliant Email Program: Practical Checklist

Compliance does not require rebuilding your email program from scratch. It requires disciplined systems around consent, data handling, and subscriber communication. Here is a practical checklist that covers all three legal layers:

Consent and List Building

• Use double opt-in for all new subscribers (best practice under CCPA, required practice under CASL)
• Any time an unauthorized person accesses unencrypted personal information like emails combined with names, passwords, or other identifiers, you must notify affected California residents without unreasonable delay. Have a breach notification plan ready.
• Never purchase email lists of California or Canadian residents

Email Content

• Use accurate "From," "Reply-to," and domain information in every send
• Subject lines should accurately reflect the content of the email and not be misleading or deceptive in any way. This applies under CAN-SPAM, § 17529.5, and CASL.
• Include your valid physical postal address in the footer of every email

Unsubscribe and Data Requests

• Email marketers must have procedures to respond to data access and deletion requests within 45 days.
• Opt-out requests must be completed within 15 business days of their receipt.
• Process CAN-SPAM opt-outs within 10 business days; CASL unsubscribes within 10 business days

Privacy Policy and Notices

• Your privacy policy needs to spell out, in plain terms, what personal information you're collecting, why you're collecting it, and who you're sharing it with.
• Add a "Do Not Sell My Personal Information" link on your website if you meet CCPA thresholds
• Train your employees on compliance with these regulations and maintain detailed records of customer requests and your responses.

Your welcome email sequence is the ideal place to set expectations about data use and make your unsubscribe path obvious from day one. Similarly, every subject line you write needs to match the content inside the email, not just for engagement, but for legal compliance. Our guide on Email Subject Line Best Practices That Boost Open Rates by 27% covers how to write subject lines that are compelling and transparent at the same time.

CAN-SPAM vs. CCPA vs. CASL: Quick Comparison

Frequently Asked Questions

Does California email marketing law apply to businesses outside California?

Yes. These actions target companies across the United States that send marketing or promotional emails to California residents, regardless of where the sender is located. If your email reaches a California resident, both CAN-SPAM and California's § 17529.5 apply. CCPA applies if your business meets the revenue or data-volume thresholds.

Does CCPA apply to small businesses?

In many cases, it does not. Many small businesses won't hit the CCPA threshold numbers. So if you're running a small online business, collecting email signups, and making money from a few affiliate programs or digital products, you're likely not legally required to comply with the CCPA in full. However, even if you're under the threshold, CCPA principles are worth following. You probably have California readers who expect transparency, and privacy-forward practices are becoming the norm, not the exception.

How is CASL different from CAN-SPAM for email marketers?

The core difference is consent. Under CASL, consent is required before sending a commercial electronic message. CAN-SPAM only requires that recipients have an easy way to opt out after receiving the email. CASL also carries far higher penalties and applies to anyone emailing Canadian residents, regardless of where the sender is based.

What happens if I use a third-party email platform and they cause a violation?

Even if you use an email marketing platform, you are still legally responsible for complying with California law. Make sure your provider's tools support CCPA compliance. Under CAN-SPAM, even if you hire another company to handle your email marketing, you cannot contract away your legal responsibility to comply with the law. Under California's § 17529.5, the advertiser benefiting from the email can be held liable even if a third-party vendor sent it.

This article is for educational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your business situation.

CAN-SPAM Act: The Federal Baseline

The CAN-SPAM Act of 2003 is a federal law that set new requirements for commercial email messages, designed to regulate commercial email and curb unwanted spam. Enforced by the Federal Trade Commission (FTC), this legislation aimed to curb spam and unsolicited content in email communications, applying to all commercial electronic mail messages sent to recipients within the United States.

Despite its name, the CAN-SPAM Act does not apply just to bulk email. It covers all commercial messages, which the law defines as "any electronic mail message the primary purpose of which is the commercial advertisement or promotion of a commercial product or service," including email that promotes content on commercial websites. The law makes no exception for business-to-business email, meaning all email, including a message to former customers announcing a new product line, must comply.

What CAN-SPAM Actually Requires

The FTC sets eight core requirements to keep marketing emails compliant. Your "From," "To," and "Reply-to" fields must accurately identify your real identity. Avoid false or misleading header information, misleading names, or spoofed addresses. Subject lines must be honest; don't use deceptive subject lines. Subject lines must match the content.

Beyond honest headers and subject lines, CAN-SPAM requires:

• A valid postal address for the sender in every commercial email. This requirement helps establish transparency and trust, allowing recipients to contact the sender if necessary.
• A clear opt-out mechanism in every commercial email, allowing recipients to unsubscribe easily. The Act mandates prompt action on opt-out requests, requiring companies to remove unsubscribed recipients from their lists within ten business days.
• Once people have told you they do not want to receive more messages from you, you cannot sell or transfer their email addresses, even in the form of a mailing list.

One common misconception: CAN-SPAM does not require email senders to get permission before they send marketing messages. It is an opt-out law, not an opt-in law. That distinction matters when comparing it to California's state law and CASL.

Who Is Responsible?

Even if you hire another company to handle your email marketing, you cannot contract away your legal responsibility to comply with the law. Both the company whose product is promoted in the message and the company that actually sends the message may be held legally responsible.

California Business and Professions Code § 17529: The State Anti-Spam Law

California's own anti-spam law predates the CCPA and operates independently of it. Enacted to curb deceptive online advertising, Business and Professions Code § 17529.5 prohibits unsolicited commercial emails containing false or misleading information, particularly those sent from or to people in California.

Companies that rely on email marketing are facing increased scrutiny as plaintiffs' firms file a surge of class action lawsuits alleging violations of California's Anti-Spam Law under § 17529.5. These actions target companies across the United States that send marketing or promotional emails to California residents, regardless of where the sender is located.

What § 17529.5 Prohibits

It is unlawful for any person or entity to advertise in a commercial email sent from California or sent to a California electronic mail address if the email advertisement contains or is accompanied by a third-party's domain name without the permission of the third party. The statute also prohibits falsified header information and misleading subject lines.

The exposure under this law is significant. With strict liability and liquidated damages up to $1,000 per email, and no intent or actual harm required, even modest campaigns can lead to multimillion-dollar exposure.

Under this strict liability theory, any company that benefits from a commercial email may be held liable, regardless of whether the message was sent directly by the company or by a third-party vendor or affiliate. This significantly increases potential exposure because the statute authorizes liquidated damages of $1,000 per unsolicited commercial email per recipient, which could result in multimillion-dollar liability in class actions involving large marketing lists.

To reduce exposure, if your company uses outside vendors, affiliates, or marketing partners, incorporate strong contractual protections requiring them to comply with applicable anti-spam laws, and conduct appropriate oversight. Preserve records of compliance efforts, including training, audits, technical safeguards, and compliance protocols, to demonstrate due care if challenged in litigation.

CCPA and CPRA: Data Privacy Rules for Email Marketers

The CCPA and its 2023 update, the CPRA, form the privacy backbone of California email marketing law. The California Consumer Privacy Act is a state-wide data protection law regulating how businesses handle personal information. It gives California residents the right to know what personal information companies collect, use, and share about them.

In November 2020, California voters approved Proposition 24, the CPRA, which amended the CCPA and added new additional privacy protections that began on January 1, 2023. As of that date, consumers gained new rights including the right to correct inaccurate personal information and the right to limit the use and disclosure of sensitive personal information.

Does the CCPA Apply to Your Business?

Not every business that emails California residents falls under CCPA. The law applies if your annual gross revenues are over $25 million, your company buys, receives, or sells the personal information of 100,000 or more California residents, or you derive 50% or more of annual revenues from selling California residents' personal information.

Critically for email marketers: the grace period for B2B communications ended on January 1, 2022. If you run B2B email campaigns targeting California-based businesses, you now need to comply with CCPA requirements, including honoring data breach notifications and "do not sell" requests.

Under the CCPA, an email address is considered personal information. That means you must inform users at the point of collection what data you're collecting and how it will be used, offer a clear opt-out option if you sell or share that information, include a "Do Not Sell My Personal Information" link on your site if applicable, and provide consumers with access to their data upon request, and delete it if they ask.

CCPA Consumer Rights That Affect Email Programs

The CCPA grants five core rights relevant to email: the Right to Know (consumers can request access to data collected about them), the Right to Delete (businesses must delete personal data upon request), the Right to Opt-Out (clear "Do Not Sell My Information" links are required), the Right to Correct (consumers can request data corrections), and the Right to Non-Discrimination (no penalties for exercising privacy rights).

For your email operations, two response deadlines matter most: you have 45 days to respond to access or deletion requests and 15 business days to process opt-outs.

For a well-segmented list where subscriber data is organized by preference and behavior, honoring these requests becomes much simpler. Learn how to build that kind of structure in our guide on Email List Segmentation Strategies That Boost ROI by 760%.

CASL: What It Means If You Have Canadian Subscribers

If any subscribers access your emails from Canada, CASL applies to you regardless of where your business is based.

The Canadian Anti-Spam Law (CASL) went into effect July 1, 2014. If you're in Canada or send a commercial electronic message (CEM) to Canadian residents, you need to comply with CASL.

Commercial electronic messages sent to recipients in Canada from another country must comply with CASL. Senders of CEMs need to: obtain consent, provide identification information, and provide an unsubscribe mechanism.

The Key Difference: Opt-In vs. Opt-Out

CASL flips the CAN-SPAM model entirely. CASL primarily relies on explicit consent, meaning that anyone you message must opt into that channel, with a few exceptions. You must also keep a record of all consents obtained under CASL, including when and how consent was obtained.

Express consent means that a person has clearly agreed to receive a CEM, either in writing or orally. The recipient must take a proactive action to indicate their express consent, for example, by signing up at your website.

Implied consent is available in limited cases. Examples include if a recipient purchased a product or service from you, accepted a business deal with you, or entered into a written contract with you, all within the past two years, or if they inquired about a product or service from you in the past six months.

No matter what type of consent you have, if a recipient asks to stop receiving CEMs through your unsubscribe mechanism or by another form of communication, you must respect their request and stop sending them CEMs within 10 business days.

CASL Penalties

The financial stakes under CASL are substantial. Fines for violating CASL can be up to $1 million per violation for individuals and up to $10 million per violation for businesses. Both individuals and businesses, including their directors, officers, and other agents, can be liable for violations.

Building a Compliant Email Program: Practical Checklist

Compliance does not require rebuilding your email program from scratch. It requires disciplined systems around consent, data handling, and subscriber communication. Here is a practical checklist that covers all three legal layers:

Consent and List Building

• Use double opt-in for all new subscribers (best practice under CCPA, required practice under CASL)
• Any time an unauthorized person accesses unencrypted personal information like emails combined with names, passwords, or other identifiers, you must notify affected California residents without unreasonable delay. Have a breach notification plan ready.
• Never purchase email lists of California or Canadian residents

Email Content

• Use accurate "From," "Reply-to," and domain information in every send
• Subject lines should accurately reflect the content of the email and not be misleading or deceptive in any way. This applies under CAN-SPAM, § 17529.5, and CASL.
• Include your valid physical postal address in the footer of every email

Unsubscribe and Data Requests

• Email marketers must have procedures to respond to data access and deletion requests within 45 days.
• Opt-out requests must be completed within 15 business days of their receipt.
• Process CAN-SPAM opt-outs within 10 business days; CASL unsubscribes within 10 business days

Privacy Policy and Notices

• Your privacy policy needs to spell out, in plain terms, what personal information you're collecting, why you're collecting it, and who you're sharing it with.
• Add a "Do Not Sell My Personal Information" link on your website if you meet CCPA thresholds
• Train your employees on compliance with these regulations and maintain detailed records of customer requests and your responses.

Your welcome email sequence is the ideal place to set expectations about data use and make your unsubscribe path obvious from day one. Similarly, every subject line you write needs to match the content inside the email, not just for engagement, but for legal compliance. Our guide on Email Subject Line Best Practices That Boost Open Rates by 27% covers how to write subject lines that are compelling and transparent at the same time.

CAN-SPAM vs. CCPA vs. CASL: Quick Comparison

Frequently Asked Questions

Does California email marketing law apply to businesses outside California?

Yes. These actions target companies across the United States that send marketing or promotional emails to California residents, regardless of where the sender is located. If your email reaches a California resident, both CAN-SPAM and California's § 17529.5 apply. CCPA applies if your business meets the revenue or data-volume thresholds.

Does CCPA apply to small businesses?

In many cases, it does not. Many small businesses won't hit the CCPA threshold numbers. So if you're running a small online business, collecting email signups, and making money from a few affiliate programs or digital products, you're likely not legally required to comply with the CCPA in full. However, even if you're under the threshold, CCPA principles are worth following. You probably have California readers who expect transparency, and privacy-forward practices are becoming the norm, not the exception.

How is CASL different from CAN-SPAM for email marketers?

The core difference is consent. Under CASL, consent is required before sending a commercial electronic message. CAN-SPAM only requires that recipients have an easy way to opt out after receiving the email. CASL also carries far higher penalties and applies to anyone emailing Canadian residents, regardless of where the sender is based.

What happens if I use a third-party email platform and they cause a violation?

Even if you use an email marketing platform, you are still legally responsible for complying with California law. Make sure your provider's tools support CCPA compliance. Under CAN-SPAM, even if you hire another company to handle your email marketing, you cannot contract away your legal responsibility to comply with the law. Under California's § 17529.5, the advertiser benefiting from the email can be held liable even if a third-party vendor sent it.

This article is for educational purposes only and does not constitute legal advice. Consult a qualified attorney for guidance specific to your business situation.