> For the complete documentation index, see [llms.txt](https://docs.satisfilabs.com/resource-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.satisfilabs.com/resource-center/marketing-engine/campaigns/messaging-campaigns/sms-regulations/sms-regulations-for-canada.md).

# SMS Regulations for Canada

Canada has **strict SMS marketing regulations**, and non-compliance can result in being blocked by all major networks. Businesses must fully understand these guidelines before sending SMS campaigns.

### Key Restrictions

**Opt-in Requirement**

* Senders must obtain **explicit opt-in consent** before sending marketing messages.
* Contacts listed in the **Do Not Call Registry** cannot be messaged.

**Message Content Regulations**

* If an SMS contains content related to **tobacco, alcohol, or adult material**, the sender must verify that the recipient is of legal age and permitted to receive such messages.
* **Targeting minors** with restricted content is strictly prohibited.

**Character Limit**

* SMS messages are limited to **160 characters per message**.

Following these regulations ensures compliance and prevents disruptions in SMS marketing campaigns.