SMS
International SMS delivery across 200+ countries.
SureM international SMS is built for verification, notification, and operational traffic that needs dependable delivery across 200+ countries and 800+ carriers.
Core specifications
Send your first international SMS in three steps
Contact SureM for an account and REST API key. Token-based REST API sending is supported for client systems.
Use the REST API for application traffic or SMPP v5 for enterprise integration. MM4 and MM7 are available where MMS-related interface depth is required.
Clients can review delivery results as part of the sending workflow, while SureM monitors traffic around the clock and supports ongoing operational reporting.
Service flow
Your platform initiates international SMS traffic from application, CRM, or operational systems.
SureM receives, routes, and manages the message flow through its international SMS server layer.
Messages are delivered across 200+ countries with country-specific handling, direct carrier connectivity, and carrier-aware routing.
International SMS strengths
SureM provides direct connectivity across 200+ countries and 800+ carriers for international delivery planning.
SureM operates with a 99.9% SLA together with around-the-clock monitoring for active messaging operations.
Send in Korean, English, Simplified and Traditional Chinese, Japanese, Hindi, Arabic, Thai, Indonesian, and other languages — with solutions for multilingual character-corruption issues.
Schedule sends to arrive in the recipient’s local time zone for reminders, campaigns, and operational traffic across regions.
Every account receives a dedicated 1:1 account manager, real-time monitoring of success/failure/volume, and a weekly performance report with consulting.
Application-to-phone workflows support address books, saved templates, scheduled send, and integration modules for client environments, while Korean direct-carrier handling is described as processing more than 10,000 messages per second for heavier traffic.
Country-specific compliance
Messages without a registered local sender ID are automatically prefixed with "Likely Scam" by regulation — plan sender ID registration before launch.
Local sender ID (SID) and the exact message body must be pre-registered before bulk dispatch. Coordinate message templates with SureM in advance.
Messages must follow prescribed header and footer formats. Traffic that does not match the required format cannot be delivered.
Korea’s top 3 carrier NPDB (Number Portability Database) is fully integrated. Messages route correctly to ported numbers and reach minor carriers, Ann Phone, internet-phone (070), and KT Powertel (013) numbers.
Sending workflows
Application-to-phone workflows support one-click transmission to larger recipient groups for operational or customer messaging.
SureM describes contact-book and saved-message workflows so repeat sending is easier for business teams.
Integration modules and application-development support are available for client environments that need direct system connectivity.
Pricing principles
Basic pricing is checked by destination country so planning remains predictable for global traffic.
SureM supports both prepaid and postpaid commercial structures depending on the customer account model.
International SMS pricing is tied to global USD or EUR settlement and can adjust when exchange rates or carrier costs move materially.
Sender ID
- ›Sender ID is the originating address from which the message appears to come.
- ›In many markets it is the displayed sender shown on the recipient handset.
- ›Each country applies its own sender ID restrictions and approval rules.
- ›SureM also states that sender numbers must be preregistered before sending, and only preregistered sender numbers are exposed in the sending workflow.
- ›Sender ID format varies by country and carrier policy.
- ›Some markets support text-based sender IDs, while others require numeric sender values.
- ›Country-specific sender approval and preregistration rules should be checked before launch.
Delivery reports
- ›SureM clients can receive delivery reports for messages they send.
- ›Sending-history review and delivery-result confirmation are part of the operating flow.
- ›Result views can distinguish successful and failed transmission outcomes.
- ›Operational reporting is supported together with ongoing traffic monitoring.
Request example
{
"type": "SMS",
"from": "sender-number",
"to": ["country-code + phone-number"],
"message": "Your code is 483920."
}Common use cases
- ›Verification codes
- ›Order updates
- ›Appointment reminders
- ›Two-factor authentication
