Use the Twilio REST API with your Account SID and Auth Token. Ensure the recipient number is in E.164 format (+688) and set the 'from' number to your Twilio number. You can also implement a status callback URL for delivery tracking.

The Mobile Country Code (MCC) for Tuvalu is 553. This code is used in conjunction with the Mobile Network Code (MNC) to identify mobile network operators within the country.

International two-way SMS is not supported due to limitations in the Tuvalu Telecommunications Corporation (TTC) network infrastructure. While local two-way messaging within the TTC network is possible, international capabilities are restricted.

The best practice is to send messages between 8:00 AM and 8:00 PM local Tuvalu time (UTC+12). Avoid sending during religious or cultural observances and consider daylight saving time changes.

No, sending SMS to landlines in Tuvalu is not supported. Attempts to send messages to landline numbers will result in a 400 response error (code 21614) through the API, without delivery or charges.

Tuvalu follows standard SMS length limits: 160 characters for GSM-7 encoding and 70 characters for Unicode. Concatenated messaging is supported for longer messages, but they are split based on encoding.

While Tuvalu lacks a Do Not Call registry, best practice is to honor opt-out requests immediately. Maintain your own suppression list, document requests with timestamps, and confirm opt-out status to the user.

Domestic long codes are supported by operator networks, although Twilio does not currently support them. International long codes have limited support, while Alphanumeric Sender IDs and Short Codes are not currently supported in Tuvalu.

Explicit opt-in consent is required. Obtain clear, documented consent before sending marketing messages. Include terms of service, privacy policy references, and information about message frequency during the opt-in process.

MMS messages are automatically converted to SMS with an embedded URL link. This maintains delivery compatibility while allowing for sharing rich media content through the link.

Gambling, adult content, and certain financial and healthcare messaging are restricted or require additional verification. Avoid excessive punctuation and special characters in messages to bypass content filtering.

Keep messages concise, include clear call-to-actions, localize content in English and Tuvaluan, personalize thoughtfully, maintain consistent branding, and respect local customs and sensitivities.

The default rate limit is one message per second per destination. Batch sending is recommended for larger volumes. Implement exponential backoff for retry logic and queue messages during peak times to ensure smooth throughput.

Several providers like Twilio, Sinch, MessageBird, and Plivo offer SMS API integrations for Tuvalu. Each requires specific authentication methods and offers different features.

Refer to the Tuvalu Telecommunications Corporation website, the Pacific ICT Regulatory Resource Center, and general SMS best practices guides for comprehensive information.