01 — Regulations
Domestic vs International
Requirements differ by who is sending. Pick the scope that matches your business.
Registration is not required for Sao Tomé and Principe — traffic can be sent directly through wholesale routing.
Sender capabilities
Sender formatAlphanumeric
Approval timeInstant
FeesNo Fees
ScopeDomestic company
Registration requirements
Registration requiredNo
Restrictions
Other Scams
Regulatory
Phishing
Explicit Content
Sending rules
OTPNo
02 — Operators
Operator regulations
2 networks carry SMS traffic in Sao Tomé and Principe. MNP is live in most markets — run an HLR lookup before routing.
CSTmovelMCC 626 · Registration not required
UnitelMCC 626 · Registration not required
03 — Compliance
Additional compliance notes
Country & operator-specific guidance maintained by the Sender ID team.
Requirements
Sender name, Company name & address, Service type, Sample content and Website
Need help registering your Sender ID?
Our compliance specialists assist with registration requirements, document review, operator approvals, and both domestic and international onboarding.
190+ countriesDomestic & international
Explore