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Grenada SMS Best Practices, Compliance, and Features
Grenada SMS Market Overview
Locale name:
Grenada
ISO code:
GD
Region
North America
Mobile country code (MCC)
352
Dialing Code
+1473
Market Conditions: Grenada has a growing mobile market with increasing SMS adoption for both personal and business communications. The telecommunications sector is dominated by major Caribbean operators like Flow (Cable & Wireless) and Digicel. While OTT messaging apps like WhatsApp are popular among smartphone users, SMS remains crucial for business communications and notifications due to its reliability and universal reach across both feature phones and smartphones.
Key SMS Features and Capabilities in Grenada
Grenada offers basic SMS functionality with some limitations on advanced features like two-way messaging and concatenation.
Two-way SMS Support
Two-way SMS is not supported in Grenada. This means businesses cannot receive replies from customers through the same SMS platform used for sending messages. Alternative communication channels should be provided for customer responses.
Concatenated Messages (Segmented SMS)
Support: Concatenated messages are not supported in Grenada. Message length rules: Messages must adhere to standard SMS character limits (160 characters for GSM-7 encoding, 70 characters for Unicode). Encoding considerations: Both GSM-7 and UCS-2 encodings are supported, but messages must remain within single-message length limits.
MMS Support
MMS messages are not directly supported in Grenada. Instead, when attempting to send MMS, the message is automatically converted to an SMS containing a URL link where recipients can view the multimedia content. This ensures that users can still access images, videos, or other media while working within the SMS infrastructure limitations.
Recipient Phone Number Compatibility
Number Portability
Number portability is not available in Grenada. This means mobile numbers remain tied to their original carrier, which can affect contact list management when users switch providers.
Sending SMS to Landlines
Sending SMS to landline numbers is not possible in Grenada. Attempts to send messages to landline numbers will result in a 400 error response with error code 21614. These messages will not appear in logs, and accounts will not be charged for failed attempts.
Compliance and Regulatory Guidelines for SMS in Grenada
SMS communications in Grenada are regulated under the Telecommunications Act, with oversight from the National Telecommunications Regulatory Commission (NTRC). While specific SMS marketing regulations are still evolving, businesses must follow general telecommunications and consumer protection guidelines.
Consent and Opt-In
Explicit Consent Requirements:
Obtain clear, documented opt-in consent before sending any marketing messages
Maintain detailed records of how and when consent was obtained
Include clear terms of service and privacy policy information during opt-in
Specify the type and frequency of messages users will receive
Best practices for documenting consent:
Store timestamp and source of opt-in
Keep records of the specific campaign or service the user subscribed to
Maintain audit trails of consent changes
Regularly update and verify consent records
HELP/STOP and Other Commands
While Grenada doesn't have specific HELP/STOP requirements, implementing these standard commands is considered best practice:
STOP: Must be honored immediately for all opt-out requests
HELP: Should provide information about the service and support contact details
INFO: Should return details about message frequency and costs
All commands should be processed in English, as it is the primary language in Grenada.
Do Not Call / Do Not Disturb Registries
Grenada does not maintain an official 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 unengaged users
Implement internal do-not-contact databases
Time Zone Sensitivity
Grenada follows Atlantic Standard Time (AST/UTC-4). Best practices for message timing:
Send messages between 8:00 AM and 8:00 PM AST
Avoid sending during national holidays
Only send outside these hours for urgent messages (e.g., security alerts)
Consider religious and cultural observances
Phone Numbers Options and SMS Sender Types for in Grenada
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 not supported
International long codes are available for SMS messaging
Sender ID preservation: Original sender IDs are typically preserved Provisioning time: 24-48 hours for international long codes Use cases: Ideal for transactional messages and customer support
Short Codes
Support: Short codes are not currently supported in Grenada Provisioning time: N/A Use cases: N/A
Restricted SMS Content, Industries, and Use Cases
Restricted Industries and Content:
Gambling and betting services
Adult content or services
Unauthorized financial services
Cryptocurrency promotions without proper disclaimers
Political messaging without proper authorization
Content Filtering
Carrier Filtering Rules:
Messages containing certain keywords may be blocked
URLs from unknown domains may trigger spam filters
High-volume sending from new numbers may be throttled
Tips to Avoid Blocking:
Use consistent sender IDs
Maintain regular sending patterns
Avoid common spam trigger words
Include clear opt-out instructions
Use approved URL shorteners
Best Practices for Sending SMS in Grenada
Messaging Strategy
Keep messages under 160 characters when possible
Include clear calls-to-action
Personalize messages using recipient's name or preferences
Maintain consistent branding across messages
Sending Frequency and Timing
Limit marketing messages to 2-4 per month per recipient
Space out messages to avoid overwhelming users
Consider local events and holidays in Grenada
Monitor engagement rates to optimize timing
Localization
Use English as the primary language
Avoid local slang unless appropriate for your audience
Consider cultural sensitivities in message content
Use clear, simple language
Opt-Out Management
Process opt-outs immediately
Send confirmation of opt-out completion
Maintain opt-out lists across all campaigns
Regular audit of opt-out compliance
Testing and Monitoring
Test messages across major carriers (Flow, Digicel)
Monitor delivery rates and engagement metrics
Track opt-out rates and reasons
Regular review of message performance analytics
SMS API integrations for Grenada
Twilio
Twilio provides a robust SMS API for sending messages to Grenada. Integration requires an account SID and auth token for authentication.
Key Parameters:
from: Your Twilio phone number or alphanumeric sender ID
to: Recipient number in E.164 format (+1473XXXXXXX)