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Marshall Islands SMS Best Practices, Compliance, and Features
Marshall Islands SMS Market Overview
Locale name:
Marshall Islands
ISO code:
MH
Region
Oceania
Mobile country code (MCC)
551
Dialing Code
+692
Market Conditions: The Marshall Islands has a growing mobile market primarily served by the National Telecommunications Authority (NTA). Mobile penetration stands at approximately 21.1% as of recent data, with SMS remaining a crucial communication channel due to reliable delivery and broad device compatibility. While OTT messaging apps are gaining popularity in urban areas, SMS continues to be the most dependable option for reaching users across the islands, particularly in remote locations where internet connectivity may be limited.
Key SMS Features and Capabilities in Marshall Islands
The Marshall Islands supports basic SMS functionality with some limitations on advanced features, focusing primarily on standard message delivery through the national telecommunications infrastructure.
Two-way SMS Support
Two-way SMS is not supported in the Marshall Islands according to current provider capabilities. This limitation affects interactive messaging campaigns and automated response systems.
Concatenated Messages (Segmented SMS)
Support: Yes, concatenated messages are supported, though availability may vary by sender ID type. Message length rules: Standard SMS length limits apply, with messages being split according to encoding type. Encoding considerations: Both GSM-7 and UCS-2 encoding are supported, with GSM-7 allowing 160 characters per segment and UCS-2 allowing 70 characters per segment.
MMS Support
MMS messages are automatically converted to SMS with an embedded URL link. This conversion ensures message delivery while providing access to multimedia content through web links.
Recipient Phone Number Compatibility
Number Portability
Number portability is not available in the Marshall Islands. This means mobile numbers remain tied to their original carrier, simplifying message routing but limiting consumer flexibility.
Sending SMS to Landlines
Sending SMS to landline numbers is not possible in the Marshall Islands. Attempts to send messages to landline numbers will result in a 400 response error (code 21614), with no message delivery and no charging of the sender's account.
Compliance and Regulatory Guidelines for SMS in Marshall Islands
SMS communications in the Marshall Islands are regulated by the National Telecommunications Authority (NTA). All SMS service providers must register with the NTA and obtain proper licensing before operating in the region. The regulatory framework emphasizes consumer protection and data privacy compliance.
Consent and Opt-In
Explicit Consent Requirements:
Written or electronic consent must be obtained before sending marketing messages
Documentation of consent must be maintained and readily available
Consent records should include timestamp, source, and scope of permission
Clear disclosure of message frequency and purpose at opt-in
HELP/STOP and Other Commands
All SMS campaigns must support standard STOP and HELP commands
Keywords should be supported in both English and Marshallese
Standard commands include:
STOP, CANCEL, UNSUBSCRIBE, END
HELP, INFO
Response to HELP messages should include service information and support contact details
Do Not Call / Do Not Disturb Registries
The Marshall Islands does not maintain a centralized Do Not Call registry. However, businesses should:
Maintain their own suppression lists
Honor opt-out requests within 24 hours
Keep records of opted-out numbers for at least 5 years
Implement proper filtering systems to prevent messaging to opted-out numbers
Time Zone Sensitivity
The Marshall Islands operates in MHT (UTC+12). Best practices include:
Sending messages between 8:00 AM and 8:00 PM MHT
Avoiding messages during major holidays
Limiting emergency messages outside these hours to genuine urgent communications
Phone Numbers Options and SMS Sender Types for in Marshall Islands
Alphanumeric Sender ID
Operator network capability: Not supported Registration requirements: N/A Sender ID preservation: N/A
Long Codes
Domestic vs. International:
Domestic long codes not supported
International long codes fully supported
Sender ID preservation: Original sender ID is preserved for international long codes Provisioning time: 1-2 business days Use cases:
Transactional messaging
Customer support
Authentication services
Short Codes
Support: Not currently supported in the Marshall Islands Provisioning time: N/A Use cases: N/A
Restricted SMS Content, Industries, and Use Cases
Prohibited Content:
Gambling and betting services
Adult content or explicit material
Unauthorized financial services
Cryptocurrency promotions
Illegal products or services
Content Filtering
Known Carrier Filtering Rules:
Messages containing certain keywords may be blocked
URLs should be from reputable domains
Excessive punctuation may trigger spam filters
Best Practices to Avoid Filtering:
Use clear, professional language
Avoid excessive capitalization
Limit special characters and emoji usage
Include company name in message body
Best Practices for Sending SMS in Marshall Islands
Messaging Strategy
Keep messages under 160 characters when possible
Include clear call-to-action
Identify your business in each message
Use consistent sender information
Sending Frequency and Timing
Limit to 4-5 messages per month per recipient
Respect local holidays and customs
Maintain consistent sending patterns
Avoid sending during weekends unless urgent
Localization
Support both English and Marshallese languages
Consider cultural sensitivities in message content
Use appropriate date and time formats
Include country code (+692) in response numbers
Opt-Out Management
Process opt-outs within 24 hours
Send confirmation of opt-out completion
Maintain accurate opt-out databases
Regular audit of opt-out lists
Testing and Monitoring
Test messages across all major local carriers
Monitor delivery rates daily
Track engagement metrics
Regular testing of opt-out functionality
Document and analyze delivery failures
SMS API integrations for Marshall Islands
Twilio
Twilio provides a robust SMS API for sending messages to the Marshall Islands. Integration requires an account SID and auth token from your Twilio dashboard.
import*as Twilio from'twilio';// Initialize Twilio client with environment variablesconst client =newTwilio( process.env.TWILIO_ACCOUNT_SID, process.env.TWILIO_AUTH_TOKEN);asyncfunctionsendSMSToMarshallIslands( to:string, message:string):Promise<void>{try{// Ensure proper formatting for Marshall Islands numbers (+692)const formattedNumber = to.startsWith('+692')? to :`+692${to}`;const response =await client.messages.create({ body: message, to: formattedNumber, from: process.env.TWILIO_PHONE_NUMBER,// Optional statusCallback for delivery tracking statusCallback:'https://your-webhook.com/status'});console.log(`Message sent successfully! SID: ${response.sid}`);}catch(error){console.error('Error sending message:', error);}}
Sinch
Sinch offers competitive rates for the Marshall Islands with straightforward API integration.