Can I send two-way SMS in Mexico?

Yes, two-way SMS is supported in Mexico.

Is number portability available in Mexico?

Yes, number portability is available in Mexico.

Can I send marketing SMS during Mexican elections?

No, using SMS as a marketing tool during Mexican elections is prohibited, and carriers will block such messages.

What are the SMS length restrictions in Mexico?

The standard SMS message length in Mexico is 160 ASCII characters. Messages exceeding this limit are split into segments and reassembled on the recipient's device.

Is MMS supported in Mexico?

MMS is not natively supported in Mexico. MMS messages are converted to SMS with a URL for multimedia access.

Can I send SMS to landlines in Mexico?

No, sending SMS to landlines is unsupported in Mexico. Attempts will result in a 400 error (code 21614), with no message logging or charges.

What is the dial plan for sending SMS in Mexico?

When sending SMS in Mexico, omit the '1' after the country code (+52) and use the 10-digit subscriber number, for example, +525512345678.

What are the timing restrictions for sending SMS in Mexico?

Avoid sending messages between 9 PM and 9 AM. Prefer daytime communication unless the message is urgent.

Is two-way SMS available in Mexico?

Yes, two-way SMS is available in Mexico, allowing interactive text conversations.

What is number portability in Mexico?

Number portability in Mexico allows users to keep their phone numbers when changing mobile carriers.

Are there any restrictions on political messaging via SMS in Mexico?

Yes, avoid using SMS for marketing or research during Mexican elections as numbers promoting political content will be blocked.

What content is prohibited in SMS messages in Mexico?

Prohibited content includes SMS related to firearms, gambling, adult content, loans, lead generation, Text 2 Pay, controlled substances, cannabis, and alcohol.

Can I use Mexican numbers for marketing or A2P traffic?

No, refrain from using Mexican numbers for marketing or A2P traffic as content like URLs and brand names may be blocked.

What are some best practices for SMS compliance in Mexico?

Best practices include obtaining opt-in consent, supporting HELP/STOP messages, and respecting do-not-call registries.

Do I need to support HELP/STOP commands in SMS campaigns in Mexico?

Yes, ensure SMS campaigns support HELP/STOP commands in the local language.

Is it necessary to obtain opt-in consent for SMS communications in Mexico?

Yes, securing opt-in consent from users is necessary before sending communications, especially for marketing purposes.

What should I do to comply with do-not-call registries in Mexico?

Avoid contacting users who are on do-not-call or do-not-disturb lists to ensure compliance.

How can I ensure SMS compliance with Mexican regulations?

Consult legal experts and adhere to guidelines such as avoiding prohibited content and respecting timing restrictions.

What happens if I send SMS during restricted hours in Mexico?

Sending SMS during restricted hours (9 PM to 9 AM) may result in non-compliance with local regulations.

Are there any special considerations for SMS sender IDs in Mexico?

Concatenation might not work with certain sender IDs, and splitting varies by character encoding.

Where can I find more information on Mexican telecommunications regulations?

You can visit the official government website for more information on Mexican telecommunications regulations.

Can I send SMS with URLs and brand names in Mexico?

Sending SMS with URLs and brand names is discouraged for marketing or A2P traffic as these may be blocked.

What should businesses do to maintain positive customer relationships through SMS in Mexico?

Businesses should adhere to compliance guidelines, respect user preferences, and ensure clear communication to foster positive customer relationships.

How does message concatenation work in Mexico?

Message concatenation is supported in Mexico, though support may vary by sender ID type. Messages use GSM-7 encoding for standard ASCII characters (160 characters per segment). UCS-2 encoding is used for special characters or Unicode (70 characters per segment).

What should I do if I get a 400 error when sending SMS in Mexico?

A 400 error (code 21614) indicates you attempted to send an SMS to a landline. Sending SMS to landlines in Mexico is not supported.

What is the Public Registry of Telecommunications Users (REPEP) in Mexico, and how does it affect my SMS campaigns?

REPEP is Mexico's do-not-call registry. Businesses must check their contact lists against REPEP before sending SMS campaigns to avoid legal issues and ensure compliance. Registration on REPEP is valid for two years.

What are the supported SMS sender types in Mexico?

Mexico supports alphanumeric sender IDs (with pre-registration required for some networks), long codes (domestic and international), and short codes.

How long does it take to provision a short code in Mexico?

Provisioning a short code in Mexico typically takes around 8 weeks.

What are some tips for avoiding SMS content filtering in Mexico?

To avoid content filtering, register sender IDs for URL-containing messages, avoid excessive punctuation and all-caps text, use consistent sender IDs, maintain steady message volumes, and include clear opt-out instructions.

How frequently should I send SMS messages to recipients in Mexico?

Limit SMS sending frequency to 3-4 messages per week per recipient. Respect Mexican holidays and cultural events. Implement frequency capping per user and monitor engagement rates to optimize timing.

Should I use Spanish when sending SMS messages in Mexico?

Yes, use Spanish as the primary language. Consider regional variations and offer bilingual options when appropriate. Test message clarity with native speakers.

How quickly should I process SMS opt-outs in Mexico?

Process opt-outs within 24 hours. Maintain a centralized opt-out database, confirm opt-out requests with an acknowledgment message, and regularly audit opt-out list compliance.

What are the standard and burst rate limits for sending SMS in Mexico?

The standard rate is 1 message per second per source number. The burst rate can reach up to 30 messages per second with proper queuing. Daily limits vary by carrier and sender type.

What is the best way to handle errors and reporting when sending SMS in Mexico?

Log all API requests and responses, track delivery receipts and status updates, monitor error rates by carrier, and implement automated alerts for high failure rates. Verify number formatting (E.164), check sender ID registration status, and monitor message content for filtered terms.

What E.164 format should I use when sending messages to Mexico?

The correct format is +52 followed by the 10-digit number. For example, +525512345678.

Where can I find more information about data protection guidelines for SMS in Mexico?

You can find more information on the INAI Data Protection Guidelines at http://inicio.inai.org.mx/.

What is the best practice for handling multimedia content when sending SMS to Mexico?

MMS messages are automatically converted to SMS with an embedded URL link pointing to the multimedia content. Ensure the URL is shortened and clearly labeled to encourage recipient engagement.

What is 'ALTO' and 'AYUDA' and how should I use them in my SMS campaigns?

All SMS campaigns must support both 'ALTO' (STOP) and 'AYUDA' (HELP) commands in Spanish. Keywords must be prominently displayed in the first message sent to new subscribers. Response to STOP commands must be immediate and confirmed. HELP responses should include customer service contact information in Spanish.

Mexico SMS Guide

# mx_sms_guidance This is placeholder content for mx_sms_guidance