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Question : How do I add an SMS opt-in? To add an SMS opt-in, collect explicit consent to receive text messages — through a signup form field, a checkbox, or a

written consent, STOP keyword, sender IDCanada — CASL: explicit consent, identification, opt-out within 60 daysUK — PECR + UK GDPR: opt-in, easy opt-out, sender

Communications and Media Authority (ACMA). The principle is the same nationwide: you need consent, clear identification of the sender and a working unsubscribe

— both regulators investigate consumer reports actively.Key requirementsRequirementWhat it meansPrior opt-inFree, specific and informed consent (GDPR + Code VI

. It also breaks the consent requirements of GDPR, CAN-SPAM, CASL, and most national email laws. Both buyers and sellers expose themselves to legal action and

, informed and revocable consent before any commercial SMS.No consent, no SMS: Sending unsolicited SMS in Brazil can lead to ANPD investigations, fines under the LGPD up

management. CAN-SPAM vs GDPR CAN-SPAM (US) is opt-out based, while GDPR (EU) requires opt-in consent — if you email across regions, follow the stricter rule. Read more

acceptable use rules. If we receive a spam complaint, you have 48 hours to provide proof of consent — without it, the account is preventively closed and fees are

audience; get it wrong and you face fines up to €375,000 from the CNIL plus reputation damage. Why this matters: France enforces both the GDPR and a national

, complaints fall, and mailbox providers reward the cleaner sending pattern with better inbox placement. In GDPR jurisdictions, a documented double opt-in is also