What is CASL (Canada)? A Clear Guide

CASL is Canada's anti-spam law and one of the world's strictest. It requires express or implied consent before sending, clear sender identification, and a working unsubscribe. Penalties reach millions of dollars.

Why it matters

Getting CASL (Canada) right keeps you compliant and lands more mail in the inbox. See the deliverability checklist.

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 watching list health and deliverability — and it welcomes senders SES, SendGrid and Mailchimp reject, from $8. Run the free checker or see plans.