Mailfois
CanadaSender identity

Sender identity rules for emails in Canada

Every commercial email must name the sender and anyone it's sent for, give a mailing address and one other contact, valid for 60 days, with no misleading sender or subject details.

The law
CASL, S.C. 2010, c. 23, section 6(2) and 6(3); Electronic Commerce Protection Regulations (CRTC), SOR/2012-36, sections 2 and 3; Competition Act sections 52.01 and 74.011
Who enforces it
Canadian Radio-television and Telecommunications Commission (CRTC); Competition Bureau for false or misleading sender and subject lines
Penalties
Under CASL, up to $1 million per violation for an individual and $10 million for any other person, such as a business.

What it means for your email

  • Every commercial email must identify the person who sent it and, if different, the person it's sent on behalf of.
  • Include the name you carry on business by, if it differs from your legal name.
  • If it's sent for someone else, say which person is sending it and which one it's sent for.
  • Include a mailing address and either a phone number, an email address or a web address.
  • These contact details must stay valid for at least 60 days after you send, and must be set out clearly and prominently.
  • Under the Competition Act, sending false or misleading sender information or subject lines to promote a business or product can be reviewable conduct or a criminal offence.

Do

  • Put the business name, mailing address and a contact route in every marketing email footer.
  • Name your client as well as your agency when you send for a client.
  • Write subject lines and from names that match who you are and what's inside.
  • Keep phone lines, inboxes and contact pages working for 60 days after each send.

Don't

  • Don't send from a name that hides your business.
  • Don't use a subject line that misleads people about the email.
  • Don't let a contact address or web page lapse inside 60 days.

Good to know

  • If it isn't practicable to fit the details in the email, they can sit on a web page reached free of charge by a clear and prominent link.
  • Messages that don't need consent, such as requested quotes, transaction confirmations and safety notices, still need the sender details.
  • These are federal rules that apply across Canada. The unsubscribe is a separate requirement: see the Canada unsubscribe card.

Sources

Researched by Mailfois · 2026/27 edition · checked 20 October 2026

Not legal advice. This is a plain-English summary. Check the sources for anything specific, or take professional advice. Spotted something out of date? Email [email protected] and we'll credit you if you'd like.

Related rules

Check every email before it goes, in every market.

Open the pre-send checker