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San Marino SMS Best Practices, Compliance, and Features
San Marino SMS Market Overview
Locale name:
San Marino
ISO code:
SM
Region
Europe
Mobile country code (MCC)
292
Dialing Code
+378
Market Conditions: San Marino, while a small European market, maintains modern telecommunications infrastructure with high mobile penetration rates. The market primarily relies on Italian mobile operators for service coverage, with TIM (Telecom Italia Mobile) being a dominant carrier. SMS remains a reliable communication channel for business messaging, though like other European markets, OTT messaging apps have significant usage among consumers. The market shows a balanced mix of Android and iOS devices, following general European mobile device trends.
Key SMS Features and Capabilities in San Marino
San Marino supports basic SMS functionality with some limitations on advanced features, operating within the European telecommunications framework.
Two-way SMS Support
Two-way SMS is not supported in San Marino according to current provider specifications. This means businesses cannot receive replies to their SMS messages through standard A2P channels.
Concatenated Messages (Segmented SMS)
Support: Concatenated messages are not supported in San Marino. Message length rules: Standard SMS character limits apply - 160 characters for GSM-7 encoding and 70 characters for Unicode. Encoding considerations: Both GSM-7 and UCS-2 encodings are supported, though messages cannot be concatenated.
MMS Support
MMS messages are automatically converted to SMS with an embedded URL link. This means any multimedia content must be hosted separately and linked within the SMS message body. This approach ensures compatibility while still enabling rich content delivery through linked resources.
Recipient Phone Number Compatibility
Number Portability
Number portability is not available in San Marino. This means mobile numbers remain tied to their original carriers, which can simplify message routing but limits consumer flexibility.
Sending SMS to Landlines
Sending SMS to landline numbers is not possible in San Marino. Attempts to send messages to landline numbers will result in a failed delivery and typically generate a 400 response error (error code 21614) from messaging APIs. These messages will not appear in logs and accounts will not be charged for failed attempts.
Compliance and Regulatory Guidelines for SMS in San Marino
San Marino follows data protection law (Law No. 171 of 21 December 2018) which aligns closely with GDPR principles. The Authority for Personal Data Protection (Autorità Garante per la Protezione dei Dati Personali) oversees compliance with these regulations. All SMS communications must adhere to these data protection standards, particularly regarding personal data processing and storage.
Consent and Opt-In
Explicit Consent Requirements:
Written or electronic consent must be obtained before sending marketing messages
Consent must be freely given, specific, and informed
Keep detailed records of when and how consent was obtained
Provide clear information about how the phone number will be used
Include the business name and purpose in consent requests
HELP/STOP and Other Commands
All marketing messages must include clear opt-out instructions
STOP commands must be honored immediately
HELP responses should be in Italian (primary language) and English
Common keywords to support: STOP, ANNULLA, AIUTO, INFO
Maintain logs of all opt-out requests and their processing dates
Do Not Call / Do Not Disturb Registries
San Marino does not maintain a centralized Do Not Call registry. However, businesses should:
Maintain their own suppression lists
Honor opt-out requests within 24 hours
Regularly clean contact lists to remove unsubscribed numbers
Document all opt-out processing procedures
Time Zone Sensitivity
San Marino follows Central European Time (CET/CEST):
Restrict messaging to 8:00 AM - 8:00 PM local time
Avoid sending during public holidays
Emergency messages may be sent outside these hours if necessary
Consider Italian holidays as well due to close ties
Phone Numbers Options and SMS Sender Types for in San Marino
Alphanumeric Sender ID
Operator network capability: Supported with dynamic usage allowed Registration requirements: No pre-registration required Sender ID preservation: Sender IDs are generally preserved as sent
Long Codes
Domestic vs. International:
Domestic long codes are supported but not available through major providers
International long codes are commonly used as an alternative
Sender ID preservation: Original sender IDs are typically preserved Provisioning time: 1-3 business days for international long codes Use cases: Ideal for transactional messages and two-factor authentication
Short Codes
Support: Short codes are not currently supported in San Marino Provisioning time: Not applicable Use cases: Not available for marketing or authentication purposes
Restricted SMS Content, Industries, and Use Cases
Restricted Industries and Content:
Gambling and betting services
Adult content or services
Cryptocurrency promotions
Political messaging without proper authorization
Religious content without proper consent
Content Filtering
Known Carrier Filters:
URLs from unknown domains may be blocked
Messages containing certain keywords related to restricted industries
Multiple exclamation marks or all-caps messages
Best Practices to Avoid Filtering:
Use registered URL shorteners
Avoid excessive punctuation
Maintain consistent sender IDs
Include clear business identification
Keep message content professional and straightforward
Best Practices for Sending SMS in San Marino
Messaging Strategy
Keep messages under 160 characters when possible
Include clear call-to-actions
Use personalization tokens thoughtfully
Maintain consistent branding across messages
Sending Frequency and Timing
Limit to 2-3 messages per week per recipient
Respect local business hours
Consider San Marino's public holidays
Space out bulk sends to avoid network congestion
Localization
Primary language should be Italian
Consider including English for international recipients
Use proper character encoding for special characters
Respect local cultural norms and customs
Opt-Out Management
Process opt-outs within 24 hours
Maintain clear opt-out records
Include opt-out instructions in every marketing message
Regular audit of opt-out compliance
Testing and Monitoring
Test messages across major carriers
Monitor delivery rates closely
Track engagement metrics
Regular testing of opt-out functionality
Document and analyze delivery failures
SMS API integrations for San Marino
Twilio
Twilio provides a straightforward REST API for sending SMS messages to San Marino. Authentication is handled through your account SID and auth token.
import*as Twilio from'twilio';// Initialize Twilio client with your credentialsconst client =newTwilio( process.env.TWILIO_ACCOUNT_SID,// Your Account SID process.env.TWILIO_AUTH_TOKEN// Your Auth Token);// Function to send SMS to San MarinoasyncfunctionsendSMSToSanMarino( to:string, message:string, senderId:string){try{// Ensure proper formatting for San Marino numbersconst formattedNumber = to.startsWith('+378')? to :`+378${to}`;const response =await client.messages.create({ body: message, from: senderId,// Your alphanumeric sender ID or phone number to: formattedNumber,// Optional parameters for delivery tracking statusCallback:'https://your-webhook.com/status'});console.log(`Message sent successfully! SID: ${response.sid}`);return response;}catch(error){console.error('Error sending message:', error);throw error;}}
Sinch
Sinch offers a robust API for SMS delivery to San Marino, with support for delivery reports and batch sending.