Can I Email Customers Without Permission in Canada?

By Jeremy, FreeSite Company · November 9, 2026

In most cases, no. Canada's anti-spam legislation (CASL) says you need the recipient's consent before sending a commercial electronic message, and that consent can be express or implied. That covers emails and texts that encourage someone to buy or take part in something commercial. I'm a web designer, not a lawyer, so treat this as a plain-language overview and check the government pages linked at the bottom for your own situation.

Express consent

Express consent means someone has clearly agreed, in writing or verbally, to receive your messages. A newsletter sign-up box on your website is the classic example. According to the Government of Canada, express consent doesn't expire unless the person withdraws it.

The key word is "clearly". A box that's already ticked, or an email address you found online, isn't the same as someone saying "yes, please contact me". Keep a record of when and how each person signed up, because the sender is the one who has to be able to show consent.

Implied consent

Implied consent only applies in specific situations set out in the law, such as an existing business relationship. The Government of Canada's guidance gives two time limits to know:

So if a customer bought from you last spring, you may be able to email them for a while. A person who filled in your contact form eight months ago is a different story. If your situation doesn't fit one of the categories in the law, you can't rely on implied consent.

What every marketing email must include

Even with consent, each message needs:

Unsubscribes need to be fast

The Act says an unsubscribe request must be acted on no later than 10 business days after it's sent, and the Government of Canada notes it must be at no cost to the person. Put the unsubscribe link somewhere visible and make sure the list you use actually removes people.

What this means for your website

Your website is usually where consent starts, so it's worth setting up properly:

If you track leads in a built-in CRM, record how each person came to you and when, so you know who you can email and who has asked to stop. It also helps to send from an address at your own domain; I cover that in domain hosting and the add-ons page.

Not everything is a marketing email

Your replies to someone's question, an appointment confirmation, or a receipt for something they bought are generally treated differently from promotions. If you're unsure which side a message falls on, the official CASL pages are the place to check, and a lawyer is the right person for anything borderline.

How FreeSite Company can help

I'm Jeremy, a web designer in Squamish. I build Canadian small businesses a custom, hand-coded website for free, and you pay $9/month* (then $13/month after three months, or $89/year) only if you keep it, month-to-month, cancel any time. I can set up sign-up forms, a contact form that sends enquiries straight to you, and a CRM or online booking if you want one. If you'd like to see what that looks like, you're welcome to take a look at the plans.

Sources

Want a custom website without the up-front cost? I'll build it free. You only pay $9/month* if you keep it.