Support varies by country
Some markets allow alphanumeric sender IDs freely, while others restrict or overwrite them.
Insight & Updates
International Support for Alphanumeric Sender ID
Use this article as a fast reference for alphanumeric sender ID support across multiple countries, with extra care around preregistration and transactional-only markets.
Sender ID Guidance
Use this article as a fast reference for alphanumeric sender ID support across multiple countries, with extra care around preregistration and transactional-only markets.
Registration can be mandatory
Several countries require preregistration before branded sender IDs can be used safely.
Testing should happen before scale
Delivery behavior can differ by market, so validation should come before large campaign deployment.
Reference Overview
Use this article as a fast reference for alphanumeric sender ID support across multiple countries, with extra care around preregistration and transactional-only markets.
This page works best as a practical reference point. Teams should still validate current support and preregistration rules before sending volume traffic into a new market.
Reader Notes
Use this as a starting point
Treat the country list as a guide, then validate the current support path before launch.
Registration assumptions should not be guessed
If sender identity matters commercially, preregistration should be clarified early.
Overview
Alphanumeric sender ID support varies significantly by country. Some markets allow branded sender IDs with minimal friction, while others require preregistration, restrict usage to transactional traffic, or replace the sender identity entirely.
How to Use This Page
Treat this reference as a planning tool, not as a substitute for current operational validation. Before sending large traffic volumes, confirm the latest support conditions and registration requirements with your delivery partner.
Common Patterns Across Markets
- Open support: some countries allow branded sender IDs without mandatory preregistration.
- Registered support: some markets require preregistration before the sender can be used safely.
- Overwritten support: some countries may replace the sender ID to preserve delivery.
- Unsupported support: some markets do not support alphanumeric sender IDs at all.
Before You Scale Traffic
- Test sender behavior in the target country.
- Confirm whether the intended traffic type is permitted.
- Clarify registration timing before launch windows are agreed internally.
- Do not assume that one country’s support pattern applies to another.
This page should remain a living operational reference. When sender strategy matters commercially, preregistration and country-specific validation should happen early.