Compliance

CASL Email Signature Compliance (Canada)

Canada's Anti-Spam Legislation (CASL, S.C. 2010, c. 23) is one of the strictest anti-spam laws in the world, governing all commercial electronic messages (CEMs) sent to or from Canada. Email signatures must include mandatory sender identification under Section 6(2), contact information under Section 6(2)(b), and unsubscribe mechanisms under Section 6(2)(c) — with penalties enforced by the Canadian Radio-television and Telecommunications Commission (CRTC).

$10M CAD

Maximum penalty per violation for businesses (Section 20)

$1M CAD

Maximum penalty per violation for individuals

36 Months

Maximum implied consent period from business relationship (Section 10(2))

CASL Requirements for Email Signatures

Sender Identification (Section 6(2)(a))

Every commercial electronic message must identify the person who sent it and, if different, the person on whose behalf it was sent — email signatures are the primary location for this identification.

Contact Information (Section 6(2)(b))

The sender's mailing address and at least one of telephone number, email address, or web address must be included and remain valid for at least 60 days after the message is sent.

Unsubscribe Mechanism (Section 6(2)(c))

A clear and prominently placed unsubscribe mechanism must be included in every CEM. The mechanism must be able to be readily performed and must be given effect within 10 business days.

Express Consent (Section 6(1))

CASL requires express or implied consent before sending CEMs. Email signatures should not contain promotional content unless appropriate consent has been obtained from recipients.

Implied Consent Time Limits

Implied consent from an existing business relationship expires after 24 months (purchase) or 6 months (inquiry) under Section 10(2) — marketing elements in signatures must respect these time limits.

Understanding CASL

Canada's Anti-Spam Legislation (CASL), which came into force on July 1, 2014, is widely regarded as one of the most stringent anti-spam laws in the world. Unlike the U.S. CAN-SPAM Act which uses an opt-out model, CASL requires express or implied consent before any commercial electronic message (CEM) can be sent. The law is enforced by the Canadian Radio-television and Telecommunications Commission (CRTC), the Competition Bureau, and the Office of the Privacy Commissioner of Canada.

CASL's impact on email signatures is direct and significant. Section 6(2) prescribes three mandatory elements that must be included in every CEM: sender identification (Section 6(2)(a)), contact information including a mailing address (Section 6(2)(b)), and an unsubscribe mechanism (Section 6(2)(c)). Email signatures are the natural location to fulfill these requirements, making proper signature configuration essential for CASL compliance.

A unique aspect of CASL is its extraterritorial reach. The law applies to any CEM sent to or from a Canadian computer system, meaning organizations worldwide must comply when communicating with Canadian recipients. The CRTC has issued guidance confirming that CEMs sent from outside Canada to Canadian recipients are subject to CASL, making compliant email signatures a global requirement for any organization with Canadian contacts.

CASL penalties are among the highest in the world for anti-spam violations. The CRTC has imposed penalties of up to $1.1 million on individuals and $15 million on organizations (though the statutory maximum for businesses is $10 million per violation). In 2015, the CRTC fined Compu-Finder $1.1 million in one of its first enforcement actions, demonstrating its willingness to impose significant penalties.

CASL Email Signature Compliance Checklist

Include clear sender identification in email signatures identifying the person and/or organization sending the message (Section 6(2)(a))

Provide a valid mailing address in the signature that remains current for at least 60 days after the message is sent (Section 6(2)(b))

Include at least one additional contact method (phone, email, or website URL) in the signature (Section 6(2)(b))

Incorporate a clear and prominently placed unsubscribe mechanism in commercial messages (Section 6(2)(c))

Ensure the unsubscribe mechanism can be readily performed at no cost to the recipient

Process unsubscribe requests within 10 business days as required by Section 6(3)

Ensure promotional banners or marketing content in signatures only appear in messages sent with appropriate consent

Track implied consent expiration dates (24 months from purchase, 6 months from inquiry) for marketing signature elements

If sending on behalf of another organization, identify both the sender and the authorizing organization in the signature

Maintain consent records documenting when and how consent was obtained for all CEM recipients

Review email signatures for compliance when staff change roles or the organization's contact information changes

Ensure French-language signature variants are available for communications with Quebec-based recipients per provincial language laws

How Siggly Ensures CASL Compliance

Mandatory Compliance Fields

Siggly's templates enforce the inclusion of sender identification, mailing address, and contact information as non-removable fields, ensuring every outbound email meets Section 6(2) requirements automatically.

Integrated Unsubscribe Management

For signatures with marketing banners, Siggly provides built-in unsubscribe link generation and processing that complies with Section 6(2)(c) and the 10-business-day processing requirement.

Consent-Aware Banner Campaigns

Siggly can differentiate between promotional and transactional signature elements, allowing marketing banners to be conditionally displayed only for recipients with appropriate CASL consent.

Bilingual Support

Siggly supports multi-language signature templates, enabling organizations to deploy French-language compliant signatures for Quebec communications alongside English versions.

"When the CRTC increased enforcement activity, our Canadian operations needed every outbound email to meet Section 6(2) requirements. Siggly's mandatory compliance fields made it impossible for employees to send non-compliant signatures."

Jean-Marc Pelletier

Legal Counsel, Boreal Financial Services Inc.

Frequently Asked Questions

Does CASL apply to all business emails sent to Canada?

CASL applies to commercial electronic messages (CEMs) sent to or from a Canadian computer system. Business-to-business emails, if they have a commercial purpose, are CEMs subject to CASL. However, purely transactional messages (e.g., order confirmations) may be exempt under Section 6(6).

How is CASL different from CAN-SPAM?

CASL is significantly stricter than CAN-SPAM. CASL requires opt-in consent (express or implied) before sending, while CAN-SPAM allows sending until the recipient opts out. CASL penalties are also higher ($10M CAD vs. $50,120 USD per violation) and CASL has broader scope covering any electronic message with a commercial purpose.

What qualifies as a "commercial electronic message" under CASL?

Under Section 1(2), a CEM is any electronic message that has as one of its purposes to encourage participation in a commercial activity. This includes promotional banners in email signatures, marketing calls-to-action, and product/service recommendations.

Can email signature banners trigger CASL requirements?

Yes. If an email signature contains a promotional banner encouraging a commercial activity (buying a product, attending a paid event, etc.), the entire message may be classified as a CEM, triggering full CASL compliance requirements including consent and unsubscribe mechanisms.

What contact information must be in a CASL-compliant signature?

Section 6(2)(b) requires a mailing address and at least one of: a telephone number, an email address, or a web address. This information must remain valid for at least 60 days after the message is sent.

Does CASL apply to non-profit organizations?

CASL applies to all organizations sending CEMs, including non-profits. However, there are specific exemptions for messages sent by charities and political organizations for fundraising purposes under Section 6(5) and related regulations.

Achieve Compliance Today

Siggly's built-in compliance features make meeting regulatory requirements effortless.