SMS compliance in Mexico
The rules that apply to business SMS sent to numbers in Mexico, with the source for each.
Quiet hours
Promotional SMS recommended 08:00-20:00; REPEP registrants excluded.
Source: PROFECO / industry practice
Consent
Consent required for marketing; numbers in REPEP must not receive advertising.
Source: Federal Law on Protection of Personal Data Held by Private Parties 2025
Opt-out
Register in REPEP; include opt-out instructions.
Source: Federal Law on Protection of Personal Data Held by Private Parties 2025 / regulator rules
Prohibited content
Blocked: phishing/fraud, illegal or unlicensed gambling, adult content, hate/political content (most operators), counterfeit/illegal goods, unlicensed financial offers; URL shorteners often blocked.
Source: Operator content policies / national advertising law
Data protection law
Federal Law on Protection of Personal Data Held by Private Parties 2025. Supervisory authority: Secretaría Anticorrupción y Buen Gobierno.
Source: Federal Law on Protection of Personal Data Held by Private Parties 2025
Sender ID rule
Registration for domestic traffic (min ~1,000 SMS/month); otherwise overwritten to short code.
Source: Operator/regulator registration rules
Other
Classify traffic as promotional or transactional; OTP/transactional must not contain marketing content; use local language or Unicode where required.
Source: Industry practice
This summary is guidance, not legal advice. Last verified 23 October 2026.