Before we begin

Due to regulatory requirements, there is sometimes a need for documents to be signed by customers to ensure that registrations are done on behalf of customers that have the right to use the Sender ID. This serves to ensure that traffic is coming from legitimate sources and minimizes any potential misuse.

This article outlines the documentation requirements for a pre-registration in Thailand. 

Things to note:

We would like to inform you that, National Broadcasting and Telecommunications Commission (NBTC) of Thailand has announced a restriction on SMS messages containing URL links, expected to be on January 1st, 2025. This policy is being implemented to help protect Thai consumers from fraud and cybercrimes.

1. Company names
2. Type of business/industry
3. Sender IDs
4. URL links included in the message
5. Objective of the URL link
6. Letter of Authorization (LOA)

Ensure you include all this information if you have any URLs in your SMS samples when you submit an application to Twilio.

Instructions

To register your Alphanumeric Sender ID, the Thailand network operators require that you provide the following documents: 

• Two Thailand Letter of Authorizations (LOAs)
• Form to Register the Sender ID Name

To get you up and running as quickly as possible, please fill out the documents completely and accurately and provide any other required information. Use the examples provided for guidance. Note that mobile network carriers are very strict about the details! We highly recommend that you download the examples (hit right click, and select 'Save Image As...') and do a side by side comparison when you are filling out the documents.

Provide the necessary information

The LOA authorizes Twilio, Inc., to register and send branded SMS messages on your company's behalf.

Once you have downloaded the forms, follow these general instructions: 

1. Fill in the yellow highlighted fields—completely replace each field with your own information. If a field is not highlighted, don’t change it.
2. If you have questions on how to fill in the required fields, refer to the annotated examples we provided for each field. 
3. Have the documents signed by an authorized signatory of the Sender.
4. In the highlighted fields, add the Sender’s letterhead and/or logo, stamp and sign where indicated.
5. Upload the forms to the Twilio Alphanumeric Sender ID Registration Form.

Required fields include:

• Sender company’s letterhead (or Company Logo)
• Company Website URL
• Alphanumeric Sender ID requested
• Sample message template
• Legal Name(Company Name) of Sender
• Company E-mail or Phone Number
• Name of authorized signatory
• Signature of authorized signatory
• Sender company stamp
• Date