Documentation
Channels
TrustRouter supports multiple messaging channels under one routing layer. Each channel differs in capabilities, compliance, and delivery behavior.
SMS
Best for OTP and critical alerts with near-universal reach.
Strengths
- Global coverage
- Simplest integration
Constraints
- Sender ID rules
- Filtering risk
- Variable delivery confirmation behavior
Best for two-way support, templates, and rich interactions.
Strengths
- High engagement
- Rich content
Constraints
- Template approval
- Opt-in
- Business policies
Viber
Strong regional performance in specific markets with branded messaging options.
Strengths
- Regional reach
- Branded sender
Constraints
- Market coverage varies by destination
RCS
Rich, verified sender experiences with interactive content in supported networks.
Strengths
- Verified branding
- Rich cards
Constraints
- Coverage fragmentation
- Operator dependencies
- RBM onboarding complexity
Channel selection guidance
OTPRCS/WhatsApp where available, fallback to SMS
AlertsSMS primary, optional WhatsApp for richer user experience
SupportWhatsApp primary with SMS fallback for reach