How to Send SMS to Canada (Rules & Deliverability)

Sending to Canada? Local rules decide whether your messages arrive.

The rules in Canada

Canada's CASL is one of the world's strictest anti-spam laws, requiring express opt-in consent and clear identification; violations carry heavy fines.

How to stay compliant and deliverable

• Get explicit consent and honor opt-out.
• Register sender IDs and templates where required.
• Use approved A2P routes, not grey routes.

How Rainmail helps

Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, plus an AI that watches your list health and deliverability — and it welcomes the senders Amazon SES, SendGrid and Mailchimp reject, from $8. Run the free 10-second checker or see plans.