Compliance · Thailand
WhatsApp Compliance in Thailand
A practical overview of the rules that affect WhatsApp messaging and marketing in Thailand, with a checklist before you launch.
Key Rules for WhatsApp in Thailand
LINE is the most popular messaging app in Thailand, while WhatsApp is common with international customers, expatriates and tourists. Official WhatsApp Business API use must follow Meta's policies and Thailand's PDPA.
WhatsApp's popularity varies across Asia; where it is widely used, Meta's policies and the local data protection law both apply to business messaging.
Data Protection
Thailand's Personal Data Protection Act B.E. 2562 (2019), fully enforced since June 2022, requires clear privacy notices and, in most cases, consent for direct marketing.
Keep a record of how each contact was collected, what they agreed to and when, and make it easy for them to withdraw consent.
Practical Checklist
- Use the official WhatsApp Business Platform rather than personal or modified apps, which risk bans.
- Collect opt-in that clearly mentions WhatsApp and your business name, and store a record of it.
- Choose the correct template category and keep utility messages free of promotions.
- Respond within the 24-hour customer service window where possible, and use approved templates outside it.
- Honour opt-outs and blocks, and watch your quality rating in WhatsApp Manager.
Contact data
Format numbers in international E.164 format with the +66 country code, remove duplicates and invalid numbers, and keep consent records linked to each number.
Timing and Language
Thailand follows the Asia/Bangkok time zone (UTC+07:00 in October 2026). The usual working week is Monday to Friday. Schedule WhatsApp campaigns for the recipient's local daytime hours, avoid public holidays and religious observances that matter to your audience, and convert send times from IST before scheduling.
In Bangkok, customers commonly use Thai and English. Messages in the customer's preferred language usually perform better, but check how local-language text affects character counts (for SMS) and template approval (for WhatsApp).
Digital Habits and Channels in Thailand
Thailand has very high smartphone and social media use, and LINE is the main channel for business-to-customer communication through LINE Official Accounts, alongside Facebook and TikTok. SMS remains common for OTPs and delivery updates.
PromptPay QR payments are ubiquitous, and mobile banking apps are used for most transfers. Songkran in April, the 11.11 and 12.12 online sales and the November to February tourism high season shape demand, and Thailand's PDPA governs consent for marketing.
Thailand's economy relies on tourism, automotive manufacturing (the Eastern Seaboard is known as the Detroit of Asia), electronics, rice, rubber and food processing. VAT is 7%, and prices are in baht. Thai consumers use LINE heavily for chatting with businesses, and PromptPay QR payments are accepted almost everywhere. The Personal Data Protection Act of 2019, fully in force since June 2022, requires consent for marketing messages.
Regulators, Registers and Practical Rules in Thailand
Thailand's Personal Data Protection Act (PDPA) has been fully in force since June 2022, supervised by the PDPC, and the NBTC regulates telecoms and has tightened rules on SMS sender names to fight scams. AIS, True and NT are the operators.
Thai operators now block messages with unregistered sender names and links to unknown domains, so register sender names and links in advance. Messages should be in Thai, with English for tourism. LINE is the main messaging app for business accounts.
Thailand's PDPC can impose administrative fines.
In practice, Thai brands rely on LINE official accounts.
General guidance, not legal advice. Check current rules with the regulator or a local adviser before launch.
Advertising Alongside Messaging
Advertising must follow the Consumer Protection Act and platform policies; health, food and especially alcohol advertising face strict rules.
This guide is general information, not legal advice, and reflects our understanding as of October 2026. Rules change, so we check current requirements for Thailand before every launch.
Planning WhatsApp campaigns for Thailand?
We check the rules, set up sender requirements and run compliant campaigns.
WhatsApp in Thailand: FAQs
Do I need consent to send marketing WhatsApp messages in Thailand?
In most cases, yes, or at least an existing customer relationship and a clear opt-out. LINE is the most popular messaging app in Thailand, while WhatsApp is common with international customers, expatriates and tourists.
Do WhatsApp rules differ by country?
Meta's WhatsApp Business policies apply worldwide, but local data protection and marketing laws in Thailand also apply, and per-message charges vary by recipient country.
Can DND Teams run WhatsApp campaigns to Thailand?
Yes. We are based in Bhopal, India, and run campaigns for international markets remotely, after checking the current rules, sender requirements and coverage for Thailand.
Is this legal advice?
No. This guide is general information to help you plan. Regulations change and their application depends on your business, so take local legal advice for significant campaigns.
Related Guides and Services
Other channels in Thailand
WhatsApp rules in nearby markets
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