SMS compliance in Yemen

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

No statutory opt-in rule identified; obtain and record prior opt-in for promotional SMS (operator/aggregator policy).

Source: Operator/aggregator policy

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: gambling/betting, alcohol, adult/dating, political and religious content, content offensive to public morals or Islam, phishing/fraud, unlicensed financial/crypto offers, URL shorteners.

Source: Operator content policies / national advertising law

No comprehensive personal data protection law in force identified; constitutional privacy and sector (telecom/cybercrime) rules apply.

Source: No law identified – verify locally

Alphanumeric SID (max 11 chars) supported; pre-registration required on some or all networks; generic SIDs (INFO, SMS, ALERT) blocked. See SenderID sheet.

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