SMS compliance in Taiwan

No statutory quiet hours identified; send promotional SMS 08:00-20:00 local time (industry best practice). Transactional/OTP 24/7.

Source: Industry practice – no official text found

Prior opt-in consent required for promotional SMS under Personal Data Protection Act; transactional/OTP allowed within an existing service relationship.

Source: Personal Data Protection Act

Promotional SMS must offer a free, simple opt-out (e.g., reply STOP); honour requests promptly and suppress opted-out numbers.

Source: Operator/aggregator policy (best practice)

Blocked: phishing/fraud, illegal or unlicensed gambling, adult content, hate/political content (most operators), counterfeit/illegal goods, unlicensed financial offers; URL shorteners often blocked.

Source: Operator content policies / national advertising law

Personal Data Protection Act. Supervisory authority: PDPC (preparatory office) / sector regulators.

Source: Personal Data Protection Act

Alphanumeric SIDs generally not supported; messages delivered from short/long numeric codes.

Source: Operator rules (see SenderID sheet)

Classify traffic as promotional or transactional; OTP/transactional must not contain marketing content; use local language or Unicode where required.

Source: Industry practice